Acts 1:6

3 To whom also he shewed himself alive after his passion by many infallible proofs, being seen of them forty days, and speaking of the things pertaining to the kingdom of God:

4 And, being assembled together with them, commanded them that they should not depart from Jerusalem, but wait for the promise of the Father, which, saith he, ye have heard of me.

5 For John truly baptized with water; but ye shall be baptized with the Holy Ghost not many days hence.

6 When they therefore were come together, they asked of him, saying, Lord, wilt thou at this time restore again the kingdom to Israel?

7 And he said unto them, It is not for you to know the times or the seasons, which the Father hath put in his own power.

8 But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me both in Jerusalem, and in all Judaea, and in Samaria, and unto the uttermost part of the earth.

9 And when he had spoken these things, while they beheld, he was taken up; and a cloud received him out of their sight.