3:16 John answered, saying unto [them] all, I indeed baptize you with water; but one mightier than I cometh, the latchet of whose shoes I am not worthy to unloose: he shall baptize you with the Holy Ghost and with fire:

2:2 And suddenly there came a sound from heaven as of a rushing mighty wind, and it filled all the house where they were sitting. 2:3 And there appeared unto them cloven tongues like as of fire, and it sat upon each of them. 2:4 And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance.

Matthew 7:8 (Amplified Bible)