Proverbs 19:19 states the enabling dynamic plainly: "A man of great wrath shall suffer punishment: for if thou deliver him, thou must do it yet again." The logic is clear — rescuing someone from the consequences of their wrath ensures you will have to do it again. The rescue prevents the learning the consequence was designed to produce. Genuine love sometimes requires letting the consequence land, not because you don't care but because you understand what the consequence is for.
Galatians 6:7 frames consequence as a moral law: "Be not deceived; God is not mocked: for whatsoever a man soweth, that shall he also reap." The sowing-and-reaping principle is presented as something God has built into the structure of reality — not as cruelty but as the design by which behavior and consequence are connected. Disrupting the connection — absorbing consequences that belong to someone else — disrupts a teaching mechanism that God designed.
Commentary is from a charismatic Protestant perspective, drawing on KJV text and public-domain sources including Spurgeon, Andrew Murray, and Matthew Henry.