NET

13 Jesse’s three oldest sons had followed Saul to war. The names of the three sons who went to war were Eliab, his firstborn, Abinadab, the second oldest; and Shammah, the third oldest.

Darby

13 And the three eldest of the sons of Jesse had gone and followed Saul to the battle; and the names of his three sons that went to the battle were Eliab the firstborn, and the second to him Abinadab, and the third Shammah.

KJV

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.