Deliver me from bloodguiltiness, O God, thou God of my salvation: [and] my tongue shall sing aloud of thy righteousness.
Ver. 14. Deliver me from blood guiltiness, O God] Heb. from bloods; in every drop whereof is a tongue crying for vengeance. Besides, if David's adultery was a sin of infirmity (he was preoccupied, as Gal 6:1), yet his murdering of Uriah, and many others that fell together with him, was a sin of presumption; a deliberate prepensed evil, done in cold blood, and therefore lay very heavily upon his conscience. Howbeit he obtained pardon for this great sin also; so that it never troubled him on his deathbed, as some other did, though not so great, whereof he had not so thoroughly repented, 1 Kings 2:5,9
Thou God of my salvation] By making choice of this so fit an attribute, he stirreth up himself to take better hold.
And my tongue shall sing aloud of thy righteousness] That is, of thy faithfulness in performing thy promise of pardon to the penitent. As Aaron's golden bells sounded, so should our tongues sound God's praises, and sing them aloud, shrill them out.