The Popular Commentary by Paul E. Kretzmann - Psalms 51:10-19
New Obedience as a Fruit of Faith v. 10. Create in me a clean heart, O God, the believer's heart having been created anew in conversion, and renew a right spirit within me, establishing his heart and soul so that he was sure of his salvation, and that his mind would be centered upon God's Word, upon the performance of His will. v. 11. Cast me not away from Thy presence, for he had once felt the excruciating agony of being excluded from the mercy of God and feared a repetition of the... read more
Matthew Henry's Concise Commentary on the Bible - Psalms 51:7-15
7-15 Purge me with hyssop, with the blood of Christ applied to my soul by a lively faith, as the water of purification was sprinkled with a bunch of hyssop. The blood of Christ is called the blood of sprinkling, Hebrews 12:24. If this blood of Christ, which cleanses from all sin, cleanse us from our sin, then we shall be clean indeed, Hebrews 10:2. He asks not to be comforted, till he is first cleansed; if sin, the bitter root of sorrow, be taken away, he can pray in faith, Let me have a... read more