Jeremiah 9:3-5, 8

“They bend their tongue like their bow; Lies and not truth prevail in the land; For they proceed from evil to evil, And they do not know Me,” declares the LORD. “Let everyone be on guard against his neighbor, And do not trust any brother; Because every brother deals craftily, And every neighbor goes about as a slanderer. Everyone deceives his neighbor And does not speak the truth, They have taught their tongue to speak lies; They weary themselves committing iniquity.

Their tongue is a deadly arrow; It speaks deceit; With his mouth one speaks peace to his neighbor, But inwardly he sets an ambush for him.