Acts 1:4-8 - The Holy Spirit Promised
4 And meeting them together He commanded them not to depart from Jerusalem, but to wait for the promise of the Father, which, said He, ye have heard from me; 5 for John indeed baptized with water, but ye shall within a few days be baptized with the holy Spirit.
6 Being therefore come together they asked Him, saying, Lord, wilt thou at this time restore the kingdom to Israel?
7 And He said unto them, It is not for you to know the times or seasons, which the Father hath reserved in his own power. 8 But ye shall receive power from the holy Spirit coming upon you: and ye shall be my witnesses both in Jerusalem, and in all Judea, and Samaria, and to the uttermost part of the earth.