John Gills Exposition of the Bible Commentary - Psalms 35:13
But as for me, when they were sick ,.... Or under any disorder or distress of body or mind, when any misfortune or infirmity attended them; meaning Saul and his courtiers, before David was persecuted by them; my clothing was sackcloth ; that is, he was grieved, and mourned for them, it being usual to put on sackcloth in time of mourning; see Genesis 37:34 ; I humbled my soul with fasting ; on the account of them, giving up himself to prayer for them, as follows: and my prayer... read more
Matthew Henry's Complete Commentary - Psalms 35:11-16
Two very wicked things David here lays to the charge of his enemies, to make good his appeal to God against them?perjury and ingratitude. I. Perjury, Ps. 35:11. When Saul would have David attainted of treason, in order to his being outlawed, perhaps he did it with the formalities of a legal prosecution, produced witnesses who swore some treasonable words or overt acts against him, and he being not present to clear himself (or, if he was, it was all the same), Saul adjudged him a traitor. This... read more