2 Peter 2:14-16

They have eyes full of adultery, constantly looking for sin, enticing and luring away unstable souls. Having hearts trained in greed, [they are] children of a curse. Abandoning the straight road [that is, the right way to live], they have gone astray; they have followed the way of [the false teacher] Balaam the son of Beor, who loved the reward of wickedness; [Num 22:5, 7] but he was rebuked for his own transgression: a mute donkey spoke with a man’s voice and restrained the prophet’s madness. [Num 22:21-31]