Charles Ellicott Commentary 2 Samuel 3:35

"And all the people came to cause David to eat bread while it was yet day; but David sware, saying, God do so to me, and more also, if I taste bread, or aught else, till the sun be down." — 2 Samuel 3:35 (ASV)

To eat meat. —The fasting of David in his grief had already attracted attention, so that the people came to urge him to take food; but he utterly refused “till the sun be down,” the usual time of ending a fast. David’s conduct had a good effect upon the people, and, indeed, they were generally disposed to look favourably upon whatever the king did.