Acts 1:7-9

7 And he said to them, It is not yours to know the times either moments, which the Father hath put in his power;

8 but ye shall take the virtue of the Holy Ghost coming from above into you, and ye shall be my witnesses in Jerusalem, and in all Judea, and Samaria, and to the utmost [or the uttermost] of the earth.

9 And when he had said these things, in their sight he was lifted up, and a cloud received him from their eyes.