What does Proverbs 19:26 mean?

This repeats the idea that unruly children—even as adults—bring shame to their parents. It is embarrassing that a son would not heed his father's instruction (Proverbs 10:17; 13:1), but reprehensible that a son would abuse his parents (Proverbs 18:3; 20:20; 28:24). In the ancient world, a woman's only reliable source of security in old age was her children. Throwing out one's mother, in that era, was to leave her defenseless and homeless.

Such maltreatment offends not only his parents and society but also God. God commanded the people of Israel to honor their fathers and mothers (Exodus 20:12). By disobeying this commandment and driving his mother away, a violent son leaves her poverty-stricken. However, he does not get off without punishment. He brings shame and disgrace to himself.

Unfortunately, elder abuse has never been rare. Wicked sons and daughters withhold care and comfort from their elderly parents, and by doing so bring God's judgment on themselves. Exodus 21:17 commands Israel: "Whoever curses his father or his mother shall be put to death." That civil penalty, in the context of the ancient nation of Israel, reflects the serious sin of abusing one's parents.