What does Acts 1:11 mean?
The disciples are staring off into the sky, watching the spot where clouds took Jesus away, when two men in white robes break their stupor (Acts 1:10). Jesus' role as a physically-visible member of the Trinity working on earth is over; it is time for the Holy Spirit (John 16:7), but He still has a role. Specifically, He will honor Stephen (Acts 7:56) and confront Saul/Paul (Acts 9:5).But Jesus will return, and the men, presumed to be angels, tell His disciples that His coming will be much like His leaving. In the end times, before the tribulation begins, "the Lord [Jesus] himself will descend from heaven with a cry of command, with the voice of an archangel, and with the sound of the trumpet of God. And the dead in Christ will rise first. Then we who are alive, who are left, will be caught up together with them in the clouds to meet the Lord in the air, and so we will always be with the Lord" (1 Thessalonians 4:16–17). At the end of the tribulation, when Jesus comes to destroy the Antichrist and his army and set up His millennial kingdom, Jesus will again come with the clouds (Revelation 1:7). In the past, God used clouds to shield His people from His glory (Exodus 19:9, 16–18; 1 Kings 8:10–11). In the future, when Jesus returns, "he is coming with the clouds, and every eye will see him, even those who pierced him, and all tribes of the earth will wail on account of him. Even so. Amen" (Revelation 1:7).
Jesus did not go into outer space, in the way we think of the region beyond earth's atmosphere. Heaven is from the Greek root word ouranos. It gives the idea of being above or lifted. That Jesus was taken into the sky acts as a metaphor for His ascendance to the spiritual realm where God exists. In other applications, "heaven" means the new earth where God-followers will live in eternity (Revelation 21—22) or outer space (Genesis 22:17).
The angels call the disciples "men of Galilee" because the eleven remaining, like Jesus, were from the district of Galilee (Mark 1:16–20; 2:13–14; John 1:43–45; 21:2). When the Holy Spirit comes upon them and they start preaching the gospel in all different languages, the people will be stunned to hear the accent of one of the most insignificant districts in the whole Roman Empire (Acts 2:7–8).