1 Samuel 17:14 KJV

12Now David was the son of that Ephrathite of Bethlehemjudah, whose name was Jesse; and he had eight sons: and the man went among men for an old man in the days of Saul.

13And the three eldest sons of Jesse went and followed Saul to the battle: and the names of his three sons that went to the battle were Eliab the firstborn, and next unto him Abinadab, and the third Shammah.

14And David was the youngest: and the three eldest followed Saul.

15But David went and returned from Saul to feed his father’s sheep at Bethlehem.

16And the Philistine drew near morning and evening, and presented himself forty days.