Jeremiah 9:6-8

Revised Standard Version Catholic Edition

⁶ Heaping oppression upon oppression, and deceit upon deceit,
    they refuse to know me, says the Lord.

“Behold, I will refine them and test them,
    for what else can I do, because of my people?
⁸ Their tongue is a deadly arrow;
    it speaks deceitfully;
with his mouth each speaks peaceably to his neighbor,
    but in his heart he plans an ambush for him.