This summary provides the key details from the document in 3 sentences:
The document describes Jonathan's plan to attack the Philistine garrison with only his armor bearer, trusting that God can deliver victory through just a few men rather than a large army. Jonathan instructs his armor bearer to follow him up to the garrison after the Philistines invite them to come up, taking this as a sign that God has delivered them into Israel's hands. The two men are able to kill around 20 Philistines in their initial attack, showing that their success was not by their own strength but through the power of God.