Hide thy face from my sins— The verb סתר satar, properly signifies to veil, or hide with a veil. The meaning is, "Do not look upon my sins with a severe eye, nor place them in the light of thy countenance with all their aggravations; but draw, as it were, a veil between thyself and them, that the sight of them may no longer provoke thee to anger, or draw down the deserved vengeance upon me."
Related Commentaries of Psalms 51:9
Psalms 51:9
9 Hide thy face from my sins, and blot out all mine iniquities.