Charles Ellicott Commentary Proverbs 29:1

"He that being often reproved hardeneth his neck Shall suddenly be destroyed, and that without remedy." — Proverbs 29:1 (ASV)

Hardens his neck. —And will not bear the easy yoke of God .

Shall suddenly be destroyed. —Literally, shattered, like a potter’s vessel that cannot be mended (Jeremiah 19:11; Isaiah 30:14).

And that without remedy. —For what more can be done for him, if he has despised God’s warnings? (Compare to Hebrews 6:4 and following).