Jeremiah 9:3-5

BBE(i) 3 Their tongues are bent like a bow to send out false words: they have become strong in the land, but not for good faith: they go on from evil to evil, and they have no knowledge of me, says the Lord. 4 Let everyone keep watch on his neighbour, and put no faith in any brother: for every brother will certainly be tricking his brother, and every neighbour will go about saying evil. 5 Everyone will make sport of his neighbour with deceit, not saying what is true: their tongues have been trained to say false words; they are twisted, hating to come back.