'Understanding' in the Bible

All the men of your alliance have brought you on your way, even to the border. The men who were at peace with you have deceived you, and prevailed against you. Friends who eat your bread lay a snare under you. There is no understanding in him."

"Won't I in that day," says Yahweh, "destroy the wise men out of Edom, and understanding out of the mountain of Esau?