Luke 3:15-16

15 Everyone was expecting the Messiah to come soon, and they were eager to know whether John might be the Messiah. 16 John answered their questions by saying, “I baptize you with water; but someone is coming soon who is greater than I am—so much greater that I’m not even worthy to be his slave and untie the straps of his sandals. He will baptize you with the Holy Spirit and with fire.