Acts 1:8 records Jesus' command to the disciples to be His witnesses to the ends of the earth, which aligns with the Great Commission in Matthew 28:19-20, where Jesus instructs them to make disciples of all nations.
Acts 1:9 describes Jesus' ascension into heaven, which is also detailed in Luke 24:50-51, highlighting the completion of His earthly ministry and His exaltation.
Acts 1:11 speaks of Jesus' return in the same manner as His ascension, which connects to Zechariah 14:4, prophesying the Messiah's return to the Mount of Olives.
Acts 1:14 describes the disciples' devotion to prayer, which is echoed in Philippians 4:6, where believers are encouraged to present their requests to God through prayer.
Acts 1:20 cites Psalm 69:25 in reference to Judas' betrayal and the need to replace him, showing the fulfillment of Scripture in the events surrounding Judas.