2 Samuel 3:35

All the people came to cause David to eat This was agreeable to the usage of the Jews; for when any one died among them, “it was customary with the friends of the family to resort to the house immediately after the funeral, and bring the best provisions they had along with them to support and refresh their friends in affliction, to the utmost of their power. And surely a more humane and benevolent usage never obtained in any country. The presumption was, that people in affliction forgot, or, it may be, neglected, their proper refreshment at a time when they most needed it; and therefore it was the business of friendship, and one of its kindest offices, to supply that care.” David sware, saying, God do so to me, &c. He absolutely refused to touch a morsel, and confirmed the refusal by an oath, that he would taste nothing till the sun went down. “He was resolved to clear his innocence by all the tests of real sorrow, and to satisfy the people that this was a just occasion of grief, he put them in mind of his dignity to whom he paid it.” See 2 Samuel 3:38, Delaney.