Jeremiah 9:8

³Don’t draw me away with the wicked, with the workers of iniquity who speak peace with their neighbors, but mischief is in their hearts.

²⁴A malicious man disguises himself with his lips, but he harbors evil in his heart. ²⁵When his speech is charming, don’t believe him, for there are seven abominations in his heart. ²⁶His malice may be concealed by deception, but his wickedness will be exposed in the assembly.

³“They bend their tongue, as their bow, for falsehood. They have grown strong in the land, but not for truth; for they proceed from evil to evil, and they don’t know me,” says the LORD.

³What will be given to you, and what will be done more to you, you deceitful tongue?

⁹Joab said to Amasa, “Is it well with you, my brother?” Joab took Amasa by the beard with his right hand to kiss him. ¹⁰But Amasa took no heed to the sword that was in Joab’s hand. So he struck him with it in the body and shed out his bowels to the ground, and didn’t strike him again; and he died. Joab and Abishai his brother pursued Sheba the son of Bichri.

²⁷When Abner had returned to Hebron, Joab took him aside into the middle of the gate to speak with him quietly, and struck him there in the body, so that he died for the blood of Asahel his brother.

²¹His mouth was smooth as butter, but his heart was war. His words were softer than oil, yet they were drawn swords.

⁴My soul is among lions. I lie among those who are set on fire, even the sons of men, whose teeth are spears and arrows, and their tongue a sharp sword.

³who sharpen their tongue like a sword, and aim their arrows, deadly words, ⁴to shoot innocent men from ambushes. They shoot at him suddenly and fearlessly.

²Everyone lies to his neighbor. They speak with flattering lips, and with a double heart.