2 Peter 2:14-16 Part 2 of 2

With eyes full of adultery, they never stop sinning; they seduce the unstable; they are experts in greed--an accursed brood! They have left the straight way and wandered off to follow the way of Balaam son of Bezer, who loved the wages of wickedness. But he was rebuked for his wrongdoing by a donkey--an animal without speech--who spoke with a human voice and restrained the prophet's madness. 

They have left the straight way and wandered off to follow the way of Balaam son of Bezer 
Numbers 22:4-6  The Moabites said to the elders of Midian, "This horde (the Israelites) is going to lick up everything around us, as an ox licks up the grass of the field." So Balak son of Zippor, who was king of Moab at that time, sent messengers to summon Balaam son of Beor, who was at Pethor, near the Euphrates River, in his native land. Balak said, "A people has come out of Egypt; they cover the face of the land and have settled next to me. Now come and put a curse on these people, because they are too powerful for me. Perhaps then I will be able to defeat them and drive them out of the land. For I know that whoever you bless is blessed, and whoever you curse is cursed." 
Numbers 31:15-16  "Have you allowed all the women to live?" he (Moses) asked them. "They were the ones who followed Balaam's advice and enticed the Israelites to be unfaithful to the LORD in the Peor incident, so that a plague struck the LORD's people."
Deuteronomy 23:4  For they (Ammonites and Moabites) did not come to meet you with bread and water on your way when you came out of Egypt, and they hired Balaam son of Beor from Pethor in Aram Naharaim to pronounce a curse on you.
Jude 11  Woe to them! They have taken the way of Cain; they have rushed for profit into Balaam's error; they have been destroyed in Korah's rebellion. 
Revelation 2:14  "Nevertheless, I have a few things against you: There are some among you who hold to the teaching of Balaam, who taught Balak to entice the Israelites to sin so that they ate food sacrificed to idols and committed sexual immorality."

but he was rebuked for his wrongdoing by a donkey 
Numbers 22:28-31  Then the LORD opened the donkey's mouth, and it said to Balaam, "What have I done to you to make you beat me these three times?" Balaam answered the donkey, "You have made a fool of me! If only I had a sword in my hand, I would kill you right now." The donkey said to Balaam, "Am I not your own donkey, which you have always ridden, to this day? Have I been in the habit of doing this to you?"  "No," he said. Then the LORD opened Balaam's eyes, and he saw the angel of the LORD standing in the road with his sword drawn. So he bowed low and fell facedown. (see Numbers 22)

(parentheses are mine) 

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