Matthew 3:7-9

7But when John saw many of the Pharisees and Sadducees coming to his place of baptism, he said to them, “You brood of vipers, who warned you to flee from the coming wrath? 8Produce fruit, then, in keeping with repentance. 9And do not presume to say to yourselves, ‘We have Abraham as our father.’ For I tell you that out of these stones God can raise up children for Abraham.