Matthew 3:7-9

7But when he saw many Pharisees and Sadducees coming to his baptism, he said to them, “You offspring of vipers! Who warned you to flee from the coming wrath?

8Therefore produce fruit that proves your repentance,

9and don’t think you can say to yourselves, ‘We have Abraham as our father.’ For I tell you that God can raise up children for Abraham from these stones!