Jeremiah 9:3-5 - WEB
3
They bend their tongue, [as it were] their bow, for falsehood; and they are grown strong in the land, but not for truth: for they proceed from evil to evil, and they don`t know me, says Yahweh.
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.
Full Chapter