That is proud in heart, though he dissemble it in his outward carriage and countenance, as Psalms 10:4. In whose heart pride rules. Though hand join in hand; though they have many friends and assistants. See the same phrase Proverbs 11:21.
Related Commentaries of Proverbs 16:5
Proverbs 16:5
5 Every one that is proud in heart is an abomination to the LORD: though hand join in hand, he shall not be unpunished.c