I intreated thy favour with [my] whole heart: be merciful unto me according to thy word.
Ver. 58. I intreated thy favour] Heb. thy face, that is, thy Christ, saith Ambrose and Hilary: this David did in the sense of his own utter inability to do as he had promised.
Be merciful unto me, &c.] This was the sum of his petition, and must be the main of ours.