Brood of vipers.John knew the coming of the Pharisees and Sadducees to the baptism was an indication of their hypocrisy. Jesus used the same terms to refer to them in Matthew 23:13-33.The wrath to come.This is a common theme running through Matthew. He sets before them, in Matthew 3:8-12, only two options: repentance and faith, or the wrath of God.