Now when He had spoken these things, while they watched, He was taken up, and a cloud received Him out of their sight.
Acts 1:9
Surrounding context
1:8 But you shall receive power when the Holy Spirit has come upon you; and you shall be witnesses to Me in Jerusalem, and in all Judea and Samaria, and to the end of the earth."
1:9 Now when He had spoken these things, while they watched, He was taken up, and a cloud received Him out of their sight.
1:10 And while they looked steadfastly toward heaven as He went up, behold, two men stood by them in white apparel,