Jamieson, Fausset & Brown, on Prov 13:17

“The messenger of the wicked shall fall into mischief: but a faithful ambassador is health.”

“A wicked--or, "unfaithful" messenger falleth into mischief--or, "by mischief," or "evil," and so his errand fails. Contrasted is the character of the faithful, whose faithfulness benefits others.”

Imported from an open dataset — not yet checked against the printed edition.