Luke 3:15–20

15 As the people were in expectation, and all were questioning in their hearts concerning John, whether he might be the Christ, 16 John answered them all, saying, “I baptize you with water, but he who is mightier than I is coming, the strap of whose sandals I am not worthy to untie. He will baptize you with the Holy Spirit and fire. 17 His winnowing fork is in his hand, to clear his threshing floor and to gather the wheat into his barn, but the chaff he will burn with unquenchable fire.”

18 So with many other exhortations he preached good news to the people. 19 But Herod the tetrarch, who had been reproved by him for Herodias, his brother’s wife, and for all the evil things that Herod had done, 20 added this to them all, that he locked up John in prison.

(ESV)