Proverbs 25:19

Confidence in an unfaithful man in time of trouble is like a broken tooth, and a foot out of joint.

This saying stands within the gathering of Solomon's proverbs made under Hezekiah, about three hundred years after Solomon's time. It takes the form of a short maxim that teaches a familiar truth by comparison. To depend on a faithless person when trouble comes is both painful and useless, as painful and disabling as trying to chew with a broken tooth or to walk with a foot out of joint. A missed ride with a stage driver shows the point, for trust placed in the driver left the traveler without the help that was needed at the needed moment.