1 Samuel 17:14 in the World English Bible
David was the youngest; and the three oldest followed Saul.
Context
13 And 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.
14 And David was the youngest: and the three eldest followed Saul.
15 But David went and returned from Saul to feed his father’s sheep at Beth-lehem.