Psalms 51:1

Have mercy upon me, O God - Without mercy I am totally, finally ruined and undone.

According to thy loving-kindness - Mark the gradation in the sense of these three words, Have Mercy on me, חנני chonneni ; thy Loving-Kindness, חסדך chasdecha ; - thy Tender Mercies, רחמיך rachameycha , here used to express the Divine compassion. The propriety of the order in which they are placed deserves particular observation.

The first, rendered have mercy or pity, denotes that kind of affection which is expressed by moaning over an object we love and pity; that natural affection and tenderness which even the brute creation show to their young by the several noises they respectively make over them.

The second, rendered loving-kindness, denotes a strong proneness, a ready, large, and liberal disposition, to goodness and compassion, powerfully prompting to all instances of kindness and bounty; flowing as freely as waters from a perpetual fountain. This denotes a higher degree of goodness than the former.

The third, rendered tender mercies, denotes what the Greeks called splagcnizesqai, that most tender pity which we signify by the moving of the heart and bowels, which argues the highest degree of compassion of which nature is susceptible. See Chandler.

Blot out my transgressions - מחה mecheh , wipe out. There is a reference here to an indictment: the psalmist knows what it contains; he pleads guilty, but begs that the writing may be defaced; that a proper fluid may be applied to the parchment, to discharge the ink, that no record of it may ever appear against him: and this only the mercy, loving-kindness, and tender compassions of the Lord can do.