David had committed adultery, but Nathan's confrontation cuts deeper. It's not just about breaking a rule, but about profoundly disrespecting the Lawgiver Himself.
Nathan doesn't just call out David's actions; he identifies the root problem: 'Why have you despised the word of the LORD?' This phrase points to a contemptuous disregard for God's commands and authority. David, as king, was God's representative on earth, yet he acted as if God's law didn't apply to him. This 'despising' isn't a casual oversight; it's a deliberate rebellion that positions oneself above God's revealed will.