Spirit of David was 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.
A noble spirit in David, and greatly aggravated the baseness of those who now so cruelly persecuted him. Prayer is never lost: if it bless not those for whom intercession is made, it shall bless the intercessors.
Psalm 35:13-14 “But as for me, when they were sick, my clothing was sackcloth: I humbled my soul with fasting; and my prayer returned into mine own bosom.”
“I behaved myself as though he had been my friend or brother: I bowed down heavily, as one that mourneth for his mother.”
Spirit of David
Sack cloth was the garment worn by mourners. He mourned their sickness. David refrained from food when it shows the seriousness of the situation in his own heart. And there is no greater loss in life than to lose one’s family. It’s that kind of reaction that David would have for the misfortune of these people. He treated and thought of these people like his own family.
David was a man of war and of a bold stout spirit and yet was thus susceptible of the impressions of sympathy, forgot the bravery of the hero and seemed wholly made up of love and pity such was the spirit of David. He was concerned for their precious souls and since he helped them with his prayers to God for mercy and grace. Fast and pray in token of the sincerity and depth of their sympathy.
“Thou hast turned for me my mourning into dancing: thou hast put off my sackcloth, and girded me with gladness.”
The meaning is that he showed the deepest sympathy in their distress by putting on the emblems of humiliation or mourning. It was also with reference to prayer in their behalf; and to fasting, that he put on these marks of grief.