Acts 1:4-8

4And, being assembled 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 from me.1 5For John truly baptized in water; but ye shall be baptized in the Holy Spirit not many days from now.

6When they therefore were come together, they asked of him, saying, Lord, wilt thou at this time restore again the kingdom to Israel? 7And he said to them, It is not for you to know the times or the seasons, which the Father hath put in his own power. 8But ye shall receive power, after the Holy Spirit is come upon you: and ye shall be witnesses to me both in Jerusalem, and in all Judaea, and in Samaria, and to the uttermost part of the earth.2