Charles Ellicott Commentary Psalms 101:5

"Whoso privily slandereth his neighbor, him will I destroy: Him that hath a high look and a proud heart will I not suffer." — Psalms 101:5 (ASV)

Whoever ... —The “informer” and the “haughty favourite” are no unknown characters in an Eastern court.

Proud heart. —Literally, broad, that is, extended with pride . But the Septuagint and Vulgate have “insatiable.”

Will not I suffer. —In Hebrew, a simple and expressive “I cannot,” to which we can supply “bear” (Jeremiah 44:22). (Compare to Isaiah 1:13: I cannot away with.)