the Holy Ghost
Acts 2:2-4
2
And suddenly there came a sound from heaven as of a rushing mighty wind, and it filled all the house where they were sitting.
3
And there appeared unto them cloven tongues like as of fire, and it sat upon each of them.
4
And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance.
Acts 4:31
And when they had prayed, the place was shaken where they were assembled together; and they were all filled with the Holy Ghost, and they spake the word of God with boldness.
Acts 8:15-17
15
Who, when they were come down, prayed for them, that they might receive the Holy Ghost:
16
For as yet he was fallen upon none of them: only they were baptized in the name of the Lord Jesus.)
17
Then laid they their hands on them, and they received the Holy Ghost.
Acts 11:15
And as I began to speak, the Holy Ghost fell on them, as on us at the beginning.
Acts 19:6
And when Paul had laid his hands upon them, the Holy Ghost came on them; and they spake with tongues, and prophesied.