Jeremiah 9:7-9

7Therefore, this is what the Lord of Heaven’s Armies says: “See, I will melt them down in a crucible and test them like metal. What else can I do with my people?

8For their tongues shoot lies like poisoned arrows. They speak friendly words to their neighbors while scheming in their heart to kill them.

9Should I not punish them for this?” says the Lord. “Should I not avenge myself against such a nation?”