II Samuel 3:35

35 Then they all came and urged David to eat something while it was still day; but David took an oath, saying, "May God deal with me, be it ever so severely, if I taste bread or anything else before the sun sets!"

35 And the people came to make David take food, while it was still day, but David with an oath said, May God's punishment be on me if I take a taste of bread or any other thing till the sun has gone down!