Passage
The three oldest sons of Jesse had gone after Saul to the battle: and the names of his three sons who went to the battle were Eliab the firstborn, and next to him Abinadab, and the third Shammah.
The three oldest sons of Jesse had gone after Saul to the battle: and the names of his three sons who went to the battle were Eliab the firstborn, and next to him Abinadab, and the third Shammah.
1 Samuel 17:11 When Saul and all Israel heard those words of the Philistine, they were dismayed, and greatly afraid.
1 Samuel 17:12 Now David was the son of that Ephrathite of Bethlehem Judah, whose name was Jesse; and he had eight sons. The man was an elderly old man in the days of Saul.
1 Samuel 17:13 The three oldest sons of Jesse had gone after Saul to the battle: and the names of his three sons who went to the battle were Eliab the firstborn, and next to him Abinadab, and the third Shammah.
1 Samuel 17:14 David was the youngest; and the three oldest followed Saul.
1 Samuel 17:15 Now David went back and forth from Saul to feed his father’s sheep at Bethlehem.
The verse centers on "three", "oldest", "sons", "jesse", "gone", "after", "saul", and "battle". It is saying that the verse draws attention to "three" and "oldest", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 12's "Now David was the son of that..." into verse 14's "David was the youngest and the three...", so "three" and "oldest" belong inside that flow. In 1 Samuel context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "three" and "oldest" with trust shaped by these words, not by a vague optimism outside the passage.