John Wesley on Psalms 51:4

Thee only - Which is not to be, understood absolutely, because he had sinned against Bathsheba and Uriah, and many others; but comparatively. So the sense is, though I have sinned against my own conscience, and against others; yet nothing is more grievous to me, than that I have sinned against thee. Thy sight - With gross contempt of thee, whom I knew to be a spectator of my most secret actions. Justified - This will be the fruit of my sin, that whatsoever severities thou shalt use towards me, it will be no blemish to thy righteousness, but thy justice will be glorified by all men. Speakest - Heb. in thy words, in all thy threatenings denounced against me. Judgest - When thou dost execute thy sentence upon me.