So David arose early in the morning and left the flock with a keeper and carried the supplies and went as Jesse had commanded him. And he came to the circle of the camp while the military force was going out in battle lines shouting the war cry.
1 Samuel 17:18 You shall also bring these ten cuts of cheese to the commander of their thousand, and look into the welfare of your brothers, and bring back a token from them.
1 Samuel 17:19 And Saul and they and all the men of Israel are in the valley of Elah, fighting with the Philistines.”
1 Samuel 17:20 So David arose early in the morning and left the flock with a keeper and carried the supplies and went as Jesse had commanded him. And he came to the circle of the camp while the military force was going out in battle lines shouting the war cry.
1 Samuel 17:21 And Israel and the Philistines arranged themselves in battle lines, battle line against battle line.
1 Samuel 17:22 Then David left his baggage in the care of the baggage keeper and ran to the battle line and entered in order to greet his brothers.
The verse centers on "david", "arose", "early", "morning", "left", "flock", "keeper", and "carried". It is saying that the verse draws attention to "david" and "arose", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 19's "And Saul and they and all the..." into verse 21's "And Israel and the Philistines arranged themselves...", so "david" and "arose" 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 "david" and "arose" with trust shaped by these words, not by a vague optimism outside the passage.