Charles H. Spurgeon on Psalms 39:8

Deliver me from all my transgressions. How fair a sign it is when the psalmist no longer harps upon his sorrows, but begs freedom from his sins! What is sorrow when compared with sin! Let but the poison of sin be gone from the cup, and we need not fear its gall, for the bitter will act medicinally. None can deliver a man from his transgression but the blessed One who is called Jesus, because he saves his people from their sins; and when he once works this great deliverance for a man from the cause, the consequences are sure to disappear too. The thorough cleansing desired is well worthy of note: to be saved from some transgressions would be of small benefit; total and perfect deliverance is needed. Make me not the reproach of the foolish. The wicked are the foolish here meant: such are always on the watch for the faults of saints, and at once make them the theme of ridicule. It is a wretched thing for a man to be suffered to make himself the butt of unholy scorn by apostasy from the right way. Alas, how many have thus exposed themselves to well deserved reproach! Sin and shame go together, and from both David would fain be preserved.