Genesis 27:36

36Esau said, a“Is he not rightly named Jacob?
 Jacob means He takes by the heel, or He cheats
For he has cheated me these two times. cHe took away my birthright, and behold, now he has taken away my blessing.” Then he said, “Have you not reserved a blessing for me?”

Jeremiah 17:9

9 The heart is deceitful above all things,
and desperately sick;
who can understand it?
Copyright information for ESV