Jeremiah 9:3-8

3“They bend their tongue like their bow; [Their] lies and not truth prevail and grow strong in the land; For they proceed from evil to evil, And they do not know and understand and acknowledge Me,” says the Lord.

4“Let everyone beware of his neighbor And do not trust any brother. For every brother is a supplanter [like Jacob, a deceiver, ready to grab his brother’s heel], And every neighbor goes around as a slanderer.

5Everyone deceives and mocks his neighbor And does not speak the truth. They have taught their tongue to speak lies; They exhaust themselves with sin and cruelty.

6Your dwelling is in the midst of deceit [oppression upon oppression and deceit upon deceit]; Through deceit they refuse to know (understand) Me,” says the Lord.

7Therefore thus says the Lord of hosts, “Behold, I will refine them [through suffering] and test them; For how else should I deal with the daughter of My people?

8Their tongue is a murderous arrow; It speaks deceit; With his mouth one speaks peace to his neighbor, But in his heart he lays traps and waits in ambush for him.