Acts 1:8-12

“But you will be given power when the Holy Spirit comes upon you, and you will be my witnesses in Jerusalem, throughout Judea and Samaria, and to the farthest places on earth.”

After Jesus had told them this, he was taken up as they were watching and a cloud hid him from their sight.

While they were staring intently at the sky as he ascended, two men dressed in white were suddenly standing beside them.

“Men of Galilee, why are you standing here staring at the sky?” they asked. “This same Jesus who has been taken up from you to heaven shall come in the same way you saw him go into heaven.”

Then the disciples went back to Jerusalem from the Mount of Olives which is about a Sabbath day's walk from Jerusalem.