But I, when they were sick— I wore sackcloth; I afflicted myself with fasting; I prayed with head bowed on my chest.
PSALM 35. So long as Saul was the enemy of David, the nobles, and such as at that time bore any authority, had (according to the subservient spirit which always prevails in the courts of kings) eagerly conspired to destroy an innocent man.
Commenting on Psalm 35:1-28
"But as for me, when they were sick, my clothing was sackcloth." David had been a man of sympathy; he had mourned when Saul was in ill health, putting on the weeds of sorrow for him as though he were a near and dear friend. His heart went into mourning for his sick master.
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, Psa 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...
Commenting on Psalm 35:11-16