Jeremiah 9:6 WEB

⁴  Take you heed everyone of his neighbor, and don't you trust in any brother; for every brother will utterly supplant, and every neighbor will go about with slanders.

⁵  They will deceive everyone his neighbor, and will not speak the truth: they have taught their tongue to speak lies; they weary themselves to commit iniquity.

⁶  Your habitation is in the midst of deceit; through deceit they refuse to know me, says Yahweh.

⁷  Therefore thus says Yahweh of Hosts, Behold, I will melt them, and try them; for how [else] should I do, because of the daughter of my people?

⁸  Their tongue is a deadly arrow; it speaks deceit: one speaks peaceably to his neighbor with his mouth, but in his heart he lays wait for him.