Jeremiah
Jeremiah 9:4BSB·traditional attribution

“Let everyone guard against his neighbor; do not trust any brother, for every brother deals craftily, and every friend spreads slander.

John Calvin Reformed @genevareformer

In this verse the Prophet describes the extreme wickedness of the people. For though sometimes thefts, robberies, frauds, slaughters, perjuries, sorceries prevail, yet some regard for near relations remains; but it is monstrous when all relative affections are destroyed. As then, even in the most wicked, there remain some natural affections, called storgoe by philosophers, it follows, that men depart wholly from nature and become...

Matthew Henry Presbyterian @wholebiblehenry

The prophet, being commissioned both to foretel the destruction coming upon Judah and Jerusalem and to point out the sin for which that destruction was brought upon them, here, as elsewhere, speaks of both very feelingly: what he said of both came from the heart, and therefore one would have thought it would reach to the heart. I.

Commenting on Jeremiah 9:1-11

John Gill Reformed Baptist @doctorgill

Take ye heed everyone of his neighbour,.... Take care of being imposed upon by them, since they are so given to lying and deceit; be not too credulous, or too easily believe what is said; or keep yourselves from them; have no company or conversation with them, since evil communications corrupt good manners: and trust ye not in any brother; whether by blood or by...