Luke 3:16-17
3:16 John answered them all, “I baptize you with water, but one more powerful than I am is coming – I am not worthy to untie the strap of his sandals. He will baptize you with the Holy Spirit and fire.
3:17 His winnowing fork is in his hand to clean out his threshing floor and to gather the wheat into his storehouse, but the chaff he will burn up with inextinguishable fire.”