1 Samuel 17:14

14 and David was the youngest. The three oldest had followed Saul,

1 Samuel 17:14 Meaning and Commentary

1 Samuel 17:14

And David was the youngest
For the sake of whom this account is given of Jesse and his family, and who after this makes a considerable figure in the camp and court of Saul:

and the three eldest followed Saul;
as before related, and which is repeated, that it might be observed that they only of Jesse's sons followed Saul; not David particularly, but who was providentially sent to the army at the time the Philistine was defying it.

1 Samuel 17:14 In-Context

12 Now David was the son of the Ephrathite from Bethlehem of Judah named Jesse. Jesse had eight sons, and during Saul's reign was [already] an old man.
13 Jesse's three oldest sons had followed Saul to the war, and their names were Eliab, the firstborn, Abinadab, the next, and Shammah, the third,
14 and David was the youngest. The three oldest had followed Saul,
15 but David kept going back and forth from Saul to tend his father's flock in Bethlehem.
16 Every morning and evening for 40 days the Philistine came forward and took his stand.
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