Acts 1:4-8 - The Holy Spirit Promised
4 and gathered them together, and commanded them, that they should not depart from Jerusalem, but to "Wait for the promise of the father, whereof ye have heard of me. 5 For John baptised with water but ye shall be baptised with the holy ghost, and that within this few days."
6 When they 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 of the holy ghost which shall come on you. And ye shall be witnesses unto me in Jerusalem, and in all Jewry, and in Samaria, and even unto the world's end."