Jude 11 Part 1 of 2

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. 

They have taken the way of Cain 
Genesis 4:3-8  In the course of time Cain brought some of the fruits of the soil as an offering to the LORD. And Abel also brought an offering--fat portions from some of the firstborn of his flock. The LORD looked with favor on Abel and his offering, but on Cain and his offering he did not look with favor. So Cain was very angry, and his face was downcast. Then the LORD said to Cain, "Why are you angry? Why is your face downcast? If you do what is right, will you not be accepted? But if you do not do what is right, sin is crouching at your door; it desires to have you, but you must rule over it."
Hebrews 11:4  By faith Abel brought God a better offering than Cain did. By faith he was commended as righteous, when God spoke well of his offerings. And by faith Abel still speaks, even though he is dead.
1 John 3:12  Do not be like Cain, who belonged to the evil one and murdered his brother. And why did he murder him? Because his own actions were evil and his brother's were righteous.

they have rushed for profit into Balaam's error 
2 Peter 2:15-16  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. (Numbers 22:21-30)

(parentheses are mine)

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