Against thee, thee only, have I sinned, and done this evil in thy sight: that thou mightest be justified when thou speakest, and be clear when thou judgest.
Nathan's rebuke roused David from a spiritual torpor into which he had sunk for a long time. Seeing the magnitude of his guilt, he turns to God's infinite mercy as his only ground for hope, knowing he deserves multiplied condemnation and might justly be cast off forever.
AI summary
Commenting on Psalm 51:1-19
Against thee, thee only have I sinned. The virus of sin lies in its opposition to God: the psalmist's sense of sin towards others rather tended to increase the force of this feeling of sin against God. All his wrong doing centred, culminated, and came to a climax, at the foot of the divine throne.
The title has reference to a very sad story, that of David's fall. But, though he fell, he was not utterly cast down, for God graciously upheld him and raised him up. 1. The sin which, in this psalm, he laments, was the folly and wickedness he committed with his neighbour's wife, a sin not to be spoken of, nor thought of, without detestation.
Commenting on Psalm 51:1-6