Psalms 51:1

Psalms 51:1. Have mercy upon me, O God, according to thy lovingkindness:

No eye can spy out the tender attributes of God like an eye that is sore with weeping on account of acknowledged sin, so David prays, "Have mercy upon me O God, according to thy lovingkindness." This word "lovingkindness" is a rich double word, and it was specially suitable just then, for he who has a broken heart - bruised and broken on account of sin, needs double mercy from God.

Psalms 51:1. According unto the multitude of thy tender mercies blot out my transgressions.

"They are on record, and I cannot erase the terrible lines, nor canst thou erase them, O Lord, without displaying a multitude of thy tender mercies. It will need omnipotence itself to get rid of this gravure in the brass; therefore, according unto the multitude of the tender mercies blot out my transgressions."