SCRIPTURE
Acts 1:1-11 (Year A, p. 321)

1 In the first writing, I worked on, Theophilus, everything Jesus did and taught from the beginning 2 until the day he instructed the apostles whom he had chosen through the Holy Spirit and was taken up to heaven. 3 Jesus presented himself to them, living, after his suffering through many convincing proofs, by appearing to them forty days and speaking about the reign of God. 4 And staying with them, Jesus commanded them not to leave Jerusalem, rather to wait there for the promise of the Faithful God, “what you heard from me.” 5 For John baptized with water, but you will be baptized with the Holy Spirit not many days from this one.”
6 When they [the disciples], came together, they asked Jesus, “Rabbi, is this the time when you will restore sovereignty to Israel?” 7 He replied, “It is not for you to know the times or seasons that the Sovereign God has set through divine authority. 8 But you will receive power when the Holy Spirit comes upon you, and you will be my witnesses in Jerusalem, in all Judea and Samaria, and to the end of the earth.”
9 And saying this, as they were watching Jesus was taken up, and a cloud took him out of their sight. 10 While they were gazing up toward heaven Jesus was going and suddenly two in white robes stood by them. 11 They said, “Galileans, why are you standing looking up into heaven? This Jesus, who has been taken up from you into heaven, will come in the way as you saw him go into heaven.”