He replied, "It is not for you to know the times or periods that the Father has set by his own authority.
But you will receive power when the Holy Spirit has come upon you; and you will be my witnesses in Jerusalem, in all Judea and Samaria, and to the ends of the earth."
When he had said this, as they were watching, he was lifted up, and a cloud took him out of their sight.
While he was going and they were gazing up toward heaven, suddenly two men in white robes stood by them.
They said, "Men of Galilee, why do you stand looking up toward heaven? This Jesus, who has been taken up from you into heaven, will come in the same way as you saw him go into heaven."
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.