Jeremiah 9:7-9

Revised Standard Version Catholic Edition

“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.
⁹ Shall I not punish them for these things? says the Lord;
    and shall I not avenge myself
    on a nation such as this?