Acts 1

Introduction

Acts 1 bridges the Gospel of Luke and the story of the early church. It opens with a brief prologue connecting this volume to "the first book" (the Gospel), then recounts Jesus' final instructions to his apostles during the forty days between his resurrection and ascension. Three events give the chapter its shape: the promise of the Holy Spirit, the ascension of Jesus, and the reconstitution of the Twelve through the selection of Matthias to replace Judas. Each prepares the church for the outpouring of the Spirit at Pentecost in Acts 2.

The chapter also introduces one of the central tensions that will run through the entire book: the relationship between the kingdom of God and the church's mission. The apostles ask whether Jesus is about to restore the kingdom to Israel, and Jesus redirects their attention from political timetables to the empowerment of the Holy Spirit and the task of worldwide witness. The programmatic statement of Acts 1:8 -- "you will be my witnesses in Jerusalem, and in all Judea and Samaria, and to the ends of the earth" -- provides the geographical and theological outline for the entire book.

Prologue and the Promise of the Holy Spirit (vv. 1-5)

¹ In my first book, O Theophilus, I wrote about all that Jesus began to do and to teach, ² until the day He was taken up to heaven, after giving instructions through the Holy Spirit to the apostles He had chosen. ³ After His suffering, He presented Himself to them with many convincing proofs that He was alive. He appeared to them over a span of forty days and spoke about the kingdom of God.

⁴ And while they were gathered together, He commanded them: "Do not leave Jerusalem, but wait for the gift the Father promised, which you have heard Me discuss. ⁵ For John baptized with water, but in a few days you will be baptized with the Holy Spirit."

¹ I composed the first account, O Theophilus, concerning all that Jesus began both to do and to teach, ² until the day he was taken up, after he had given commands through the Holy Spirit to the apostles whom he had chosen. ³ To these he also presented himself alive after his suffering, by many convincing proofs, appearing to them over a period of forty days and speaking about the kingdom of God.

⁴ And while eating with them, he charged them not to depart from Jerusalem, but to wait for the promise of the Father, "which," he said, "you heard from me. ⁵ For John baptized with water, but you will be baptized with the Holy Spirit not many days from now."

Notes

The opening phrase Τὸν μὲν πρῶτον λόγον ("The first account") uses λόγον, which literally means "word" or "account" but was commonly used for a written treatise or book in classical and Hellenistic Greek. The particle μέν ("on the one hand") typically sets up a contrast with δέ ("on the other hand"), but here the expected second member never arrives. Luke begins the formal parallel and then moves into narrative, a feature of his sometimes complex Greek style.

The phrase "all that Jesus began to do and to teach" carries programmatic weight. The verb ἤρξατο ("began") implies that the Gospel records only the opening movement of Jesus' work and that Acts will narrate its continuation through the Holy Spirit and the apostles. What he began in his earthly ministry, he continues through his church.

The word τεκμηρίοις ("convincing proofs") in verse 3 appears only here in the New Testament. In classical Greek it denoted demonstrative proof as opposed to a mere indication or sign, that is, evidence of the highest order. Luke is stressing the certainty of the resurrection: Jesus did not merely appear as a ghost but demonstrated his bodily reality through many proofs over forty days.

The verb in verse 4 is debated. The Greek συναλιζόμενος can mean either "being assembled together with" (from συναλίζω) or "eating salt together with" (from σύν + ἅλς, "salt"). Some translations render this "while they were gathered together," but the alternative reading "while eating with them" has strong support and fits Luke's emphasis on table fellowship with the risen Jesus (Luke 24:30, Luke 24:41-43). Eating together served as proof of bodily resurrection and also carried covenantal significance.

The command to wait for τὴν ἐπαγγελίαν τοῦ Πατρός ("the promise of the Father") connects back to Luke 24:49 and ultimately to Old Testament prophecies about the outpouring of God's Spirit (Joel 2:28-29, Isaiah 44:3, Ezekiel 36:26-27). The contrast between John's water baptism and the coming baptism ἐν Πνεύματι Ἁγίῳ ("in/with the Holy Spirit") echoes John the Baptist's own prophecy (Luke 3:16, Mark 1:8).

The Question about the Kingdom and the Commission (vv. 6-8)

⁶ So when they came together, they asked Him, "Lord, will You at this time restore the kingdom to Israel?"

⁷ Jesus replied, "It is not for you to know times or seasons that the Father has fixed by His own authority. ⁸ But you will receive power when the Holy Spirit comes upon you, and you will be My witnesses in Jerusalem, and in all Judea and Samaria, and to the ends of the earth."

⁶ So when they had come together, they asked him, "Lord, is it at this time that you are restoring the kingdom to Israel?"

⁷ He said to them, "It is not for you to know the times or the seasons that the Father has set by his own authority. ⁸ But you will receive power when the Holy Spirit has come upon you, and you will be my witnesses both in Jerusalem and in all Judea and Samaria, and to the farthest part of the earth."

Notes

The apostles' question shows that even after forty days of instruction about the kingdom of God, they still expected a political restoration of Israel. The verb ἀποκαθιστάνεις ("are you restoring") is in the present tense, suggesting they thought it might happen imminently. The expectation itself was grounded in Old Testament prophetic promise (Isaiah 9:6-7, Amos 9:11, Ezekiel 37:21-28) and stood at the center of first-century Jewish messianic hope.

Jesus does not rebuke the expectation itself; he does not say, "there will be no restoration," but redirects their focus. He distinguishes between χρόνους ("times," referring to duration or epochs) and καιρούς ("seasons" or "appointed times," referring to critical moments). Both are under the Father's exclusive authority, set by τῇ ἰδίᾳ ἐξουσίᾳ ("his own authority"). The verb ἔθετο ("has set/placed") is in the middle voice, emphasizing the Father's personal, sovereign determination.

Verse 8 is the programmatic statement for the entire book. The word δύναμιν ("power") is not political or military force but the empowering presence of the Holy Spirit for witness. The term μάρτυρες ("witnesses") becomes a governing word throughout Acts. Originally a legal term for one who testifies to what they have seen and heard, it would eventually acquire the meaning of "martyr" as many of these witnesses sealed their testimony with their blood. The geographical progression of Jerusalem, Judea, Samaria, and the ends of the earth maps the structural outline of the book: chapters 1–7 (Jerusalem), 8–12 (Judea and Samaria), 13–28 (the wider Gentile world).

Interpretations

The relationship between Israel's kingdom hope and the church's mission is a central interpretive question in Acts. Dispensational interpreters typically argue that Jesus' response in verse 7 implicitly affirms that there will be a future political restoration of Israel, but its timing remains unrevealed -- the church age is a parenthesis in God's program for Israel, and the kingdom will be restored to national Israel at Christ's second coming. Covenant theology and amillennial interpreters tend to read Jesus' answer as a redefinition of the kingdom: the restoration is happening, but not in the political way the apostles expected. Through the outpouring of the Spirit and the mission to all nations, God is reconstituting Israel around the Messiah, incorporating Gentiles into the people of God. Reformed interpreters in the postmillennial tradition sometimes argue that the spread of the gospel described in Acts is itself the beginning of the kingdom's restoration, which will continue until Christ returns.

The Ascension (vv. 9-11)

⁹ After He had said this, they watched as He was taken up, and a cloud hid Him from their sight. ¹⁰ They were looking intently into the sky as He was going, when suddenly two men dressed in white stood beside them. ¹¹ "Men of Galilee," they said, "why do you stand here looking into the sky? This same Jesus, who has been taken from you into heaven, will come back in the same way you have seen Him go into heaven."

⁹ And after he had said these things, as they were looking on, he was lifted up, and a cloud took him from their sight. ¹⁰ And while they were gazing into heaven as he went, suddenly two men in white garments stood beside them, ¹¹ and they said, "Men of Galilee, why do you stand looking into heaven? This Jesus, who was taken up from you into heaven, will come in the same way as you saw him go into heaven."

Notes

The details of the ascension account carry theological weight. The verb ἐπήρθη ("was lifted up") is a divine passive: God is the one who raises Jesus. The νεφέλη ("cloud") that receives him is not merely a meteorological feature but recalls the cloud of God's presence (the Shekinah glory) that led Israel in the wilderness (Exodus 13:21-22), filled the tabernacle (Exodus 40:34-35), and was associated with the Son of Man's coming in glory (Daniel 7:13, Mark 14:62). The cloud signals that Jesus is entering the divine realm, the presence of God.

The verb ἀτενίζοντες ("gazing intently") is a characteristic Lukan word, appearing fourteen times in Luke-Acts and nowhere else in the Gospels. It describes a fixed, concentrated stare; the apostles are transfixed by the sight.

The two men in white are clearly angelic figures (compare Luke 24:4 at the empty tomb). Their message contains both a gentle rebuke and a promise. The rebuke redirects the disciples from passive sky-gazing to active mission. The promise is that οὗτος ὁ Ἰησοῦς ("this Jesus"), the same embodied, risen person they knew, will return ὃν τρόπον ("in the same manner") as they saw him go. This became an important text for the doctrine of the visible, bodily return of Christ (1 Thessalonians 4:16-17, Revelation 1:7).

The Upper Room and the Gathered Community (vv. 12-14)

¹² Then they returned to Jerusalem from the Mount of Olives, which is near the city, a Sabbath day's journey away. ¹³ When they arrived, they went to the upper room where they were staying: Peter and John, James and Andrew, Philip and Thomas, Bartholomew and Matthew, James son of Alphaeus, Simon the Zealot, and Judas son of James. ¹⁴ With one accord they all continued in prayer, along with the women and Mary the mother of Jesus, and with His brothers.

¹² Then they returned to Jerusalem from the mount called Olivet, which is near Jerusalem, a Sabbath day's journey away. ¹³ And when they had entered, they went up to the upper room where they were staying -- Peter and John, and James and Andrew, Philip and Thomas, Bartholomew and Matthew, James the son of Alphaeus, Simon the Zealot, and Judas the son of James. ¹⁴ All these with one mind were devoting themselves to prayer, together with the women and Mary the mother of Jesus, and his brothers.

Notes

The Mount of Olives is described as σαββάτου ἔχον ὁδόν ("having a Sabbath day's journey") from Jerusalem -- approximately 2,000 cubits or about half a mile, the maximum distance a Jew could travel on the Sabbath according to rabbinic tradition (based on Exodus 16:29 and Joshua 3:4).

The ὑπερῷον ("upper room") was a large room on the upper floor of a Jerusalem house. Some identify it with the room of the Last Supper (Luke 22:12), though Luke does not say so explicitly. The list of the eleven apostles matches Luke's earlier list (Luke 6:14-16) minus Judas Iscariot, though the order differs. The pairing of names in twos (Peter and John, James and Andrew) may reflect the pairs in which they were sent out for mission.

The phrase ὁμοθυμαδόν ("with one mind/accord") is one of Luke's favorite words in Acts, appearing eleven times. It describes a shared purpose and unity of spirit that characterized the early church. The group devoted themselves to τῇ προσευχῇ ("the prayer" or "prayer"), with the definite article possibly suggesting specific, structured times of prayer.

The mention of σὺν γυναιξίν ("together with the women") likely refers to the women who had followed Jesus from Galilee and witnessed the crucifixion and resurrection (Luke 8:2-3, Luke 23:49, Luke 24:10). Mary the mother of Jesus appears here for the last time in the New Testament. The reference to Jesus' ἀδελφοῖς ("brothers") is striking because during Jesus' ministry they had not believed in him (John 7:5). Their presence here, praying with the community, indicates that the resurrection had brought them to faith. James, the Lord's brother, will later become the leader of the Jerusalem church (Acts 15:13, Galatians 1:19).

Peter's Speech and the Fate of Judas (vv. 15-22)

¹⁵ In those days Peter stood up among the brothers (a gathering of about a hundred and twenty) and said, ¹⁶ "Brothers, the Scripture had to be fulfilled that the Holy Spirit foretold through the mouth of David concerning Judas, who became a guide for those who arrested Jesus. ¹⁷ He was one of our number and shared in this ministry."

¹⁸ (Now with the reward for his wickedness Judas bought a field; there he fell headlong and burst open in the middle, and all his intestines spilled out. ¹⁹ This became known to all who lived in Jerusalem, so they called that field in their own language Akeldama, that is, Field of Blood.)

²⁰ "For it is written in the book of Psalms: 'May his place be deserted; let there be no one to dwell in it,' and, 'May another take his position.' ²¹ Therefore it is necessary to choose one of the men who have accompanied us the whole time the Lord Jesus went in and out among us, ²² beginning from John's baptism until the day Jesus was taken up from us. For one of these must become a witness with us of His resurrection."

¹⁵ And in those days Peter stood up in the midst of the brothers -- a crowd of about one hundred and twenty people was gathered -- and said, ¹⁶ "Brothers, it was necessary for the Scripture to be fulfilled, which the Holy Spirit spoke beforehand through the mouth of David concerning Judas, who became a guide to those who arrested Jesus. ¹⁷ For he was numbered among us and was allotted his share in this ministry."

¹⁸ (Now this man acquired a field with the wages of his unrighteousness, and falling headlong, he burst open in the middle and all his bowels poured out. ¹⁹ And it became known to all who lived in Jerusalem, so that field was called in their own language Akeldama, that is, Field of Blood.)

²⁰ "For it is written in the book of Psalms, 'May his dwelling place become desolate, and let no one live in it,' and, 'Let another take his office.' ²¹ Therefore, of the men who have accompanied us during the whole time that the Lord Jesus went in and out among us, ²² beginning from the baptism of John until the day he was taken up from us -- one of these must become a witness with us of his resurrection."

Notes

Peter's speech is the first of many in Acts and reveals how the early church interpreted the Old Testament in light of Christ. The phrase ἔδει πληρωθῆναι τὴν γραφήν ("it was necessary for the Scripture to be fulfilled") expresses divine necessity. What happened to Judas was not merely a tragedy but was foreseen and foretold by the Holy Spirit through David. Luke attributes the psalms to David as their author and the Holy Spirit as their ultimate source.

Verses 18-19 are a parenthetical note by Luke (not part of Peter's speech) explaining Judas' fate. The account differs in details from Matthew 27:3-10, where the chief priests buy the field with the returned silver. The apparent discrepancy is commonly resolved by noting that the priests bought the field in Judas' name with his money, since blood money could not be returned to the temple treasury. In that sense, it is true both that Judas bought it and that the priests did. The word πρηνὴς γενόμενος ("falling headlong") describes a forward fall, and ἐλάκησεν μέσος ("burst open in the middle") is a graphic and rare verb. The Aramaic Ἁκελδαμάχ ("Akeldama") is translated for the Greek-speaking audience as "Field of Blood."

The two psalm quotations are from Psalm 69:25 and Psalm 109:8. The first justifies the desolation of Judas' place; the second provides the scriptural basis for replacing him. The word ἐπισκοπήν ("office" or "position of oversight") is the same root from which "bishop" (episkopos) derives, though here it refers to Judas' apostolic office.

Peter's criteria for the replacement are precise: the candidate must have been a companion of the apostles ἐν παντὶ χρόνῳ ("during the whole time") of Jesus' public ministry, from John's baptism to the ascension, and must be a μάρτυρα τῆς ἀναστάσεως ("witness of the resurrection"). This underscores that apostolic authority rested on firsthand experience with the earthly and risen Jesus.

The Selection of Matthias (vv. 23-26)

²³ So they proposed two men: Joseph called Barsabbas (also known as Justus) and Matthias. ²⁴ And they prayed, "Lord, You know everyone's heart. Show us which of these two You have chosen ²⁵ to take up this ministry and apostleship, which Judas abandoned to go to his rightful place." ²⁶ Then they cast lots, and the lot fell to Matthias. So he was added to the eleven apostles.

²³ And they put forward two: Joseph called Barsabbas, who was also called Justus, and Matthias. ²⁴ And they prayed and said, "You, Lord, who know the hearts of all, show which one of these two you have chosen ²⁵ to take the place of this ministry and apostleship, from which Judas turned aside to go to his own place." ²⁶ And they cast lots for them, and the lot fell on Matthias, and he was numbered with the eleven apostles.

Notes

The two candidates -- Joseph Barsabbas (also called Justus) and Matthias -- are otherwise unknown in the New Testament, though both clearly met Peter's criteria of having been with the apostles throughout Jesus' ministry. The double or triple names reflect the multilingual culture: "Joseph" is Hebrew, "Barsabbas" is Aramaic (meaning "son of the Sabbath" or "son of the elder"), and "Justus" is Latin. Neither name appears again in Acts; Matthias is never mentioned after his selection.

The prayer addresses God as καρδιογνῶστα ("knower of hearts"), a word used only here and in Acts 15:8 in the New Testament. It affirms that the choice belongs to God, not to the community. They are asking God to reveal his decision, not to ratify theirs. The word "Lord" (Κύριε) could refer to either God the Father or the risen Jesus; since Jesus chose the original Twelve (Luke 6:13), the prayer may be addressed to him.

The phrase τὸν τόπον τὸν ἴδιον ("his own place") is a somber euphemism for Judas' final destiny -- the place that was truly "his own," chosen by his own betrayal.

The casting of lots (ἔδωκαν κλήρους αὐτοῖς, literally "they gave lots for them") was an accepted Old Testament method of discerning God's will (Proverbs 16:33, Leviticus 16:8, 1 Samuel 14:41-42). This is the last time lots are cast in the New Testament. After the outpouring of the Holy Spirit at Pentecost, the Spirit himself guides the church's decisions (see Acts 13:2, Acts 15:28, Acts 16:6-7). That Matthias was συγκατεψηφίσθη ("was numbered together with") the eleven uses a compound verb found only here in the New Testament, emphasizing his full incorporation into the apostolic body.

Interpretations

Some interpreters, particularly in the Reformed tradition, have questioned whether the selection of Matthias was legitimate, suggesting that the apostles acted prematurely and that Paul was God's intended replacement for Judas. They note that Matthias is never mentioned again, while Paul claims apostolic authority repeatedly. However, this view remains a minority position. Luke presents the selection without any hint of disapproval: Peter acts under scriptural guidance, the community prays for divine direction, and the procedure follows established biblical precedent. Most Protestant commentators accept that Matthias was properly chosen to restore the Twelve as the reconstituted foundation of the new Israel (Matthew 19:28, Revelation 21:14), while Paul's apostleship was of a different kind, "one born out of due time" (1 Corinthians 15:8), appointed directly by the risen Christ for the Gentile mission.