What Does Proverbs 21:12 Mean?

The 'righteous man' here likely refers to God Himself, the ultimately Righteous One who 'wisely considereth the house of the wicked.' God observes the wicked's dwelling—their entire life and household—with perfect knowledge and just judgment. He then 'overthroweth' them in judgment. This assures believers that God sees all wickedness and will certainly judge it. No evil escapes divine notice or escapes ultimate accountability. God's timing may seem slow by human standards, but His justice is certain. This should produce both comfort (God will vindicate the oppressed) and warning (no one evades accountability). The same God who numbers hairs on heads also catalogs every wicked deed for final judgment.