For forty days the Philistine came forward and took his stand, morning and evening.
He fasted forty days and forty nights, and afterwards he was famished.
where for forty days he was tempted by the devil. He ate nothing at all during those days, and when they were over, he was famished.
but David went back and forth from Saul to feed his father's sheep at Bethlehem.
Jesse said to his son David, “Take for your brothers an ephah of this parched grain and these ten loaves, and carry them quickly to the camp to your brothers;