1 Samuel 17:13-15

Young's Literal Translation

¹³ and the three eldest sons of Jesse go, they have gone after Saul to battle; and the name of his three sons who have gone into battle [are] Eliab the first-born, and his second Abinadab, and the third Shammah.

¹⁴ And David is the youngest, and the three eldest have gone after Saul,

¹⁵ and David is going and returning from Saul, to feed the flock of his father at Beth-Lehem.