Their tongue is a murderous arrow; it speaks deceitfully; one speaks peaceably to his neighbor with his mouth, but in his heart he lays snares and waits in ambush for him.
And when Abner returned to Hebron, Joab took him aside to the center of the gate to speak to him privately, and there he smote Abner in the abdomen, so that he died to avenge the blood of Asahel, Joab's brother.
And they bend their tongue, [which is] their bow for the lies [they shoot]. And not according to faithfulness do they rule and become strong in the land; for they proceed from evil to evil, and they do not know and understand and acknowledge Me, says the Lord.
Let everyone beware of his neighbor and put no trust in any brother. For every brother is an utter and complete supplanter (one who takes by the heel and trips up, a deceiver, a Jacob), and every neighbor goes about as a slanderer. [Gen. 25:26.]
And they deceive and mock every one his neighbor and do not speak the truth. They have taught their tongues to speak lies; they weary themselves committing iniquity.