But when he saw many of the Pharisees and Sadducees coming for baptism, he said
to them, "You brood of vipers, who warned you to flee from the wrath to come?
Therefore bear fruit in keeping with repentance; and do not
suppose that you can say to yourselves, 'We have Abraham for our father' for I
say to you that from these stones God is able to raise up children to Abraham.
The axe is already laid at the root of the trees; therefore every
tree that does not bear good fruit is cut down and thrown into the fire. As for me, I baptize you in water unto repentance, but he who is coming
after me is mightier than I, and I am not fit to remove his sandals. He will
baptize you in the Holy Spirit and fire. His winnowing fork is in
his hand, and he will thoroughly clear his threshing floor and he will gather
his wheat into the barn, but he will burn up the chaff with unquenchable fire."
Matthew 3:7-12