TSK · 1 Samuel 13:22

God chose new leaders, then fighters appeared in the city gates; but, I swear, not a shield or spear could be found, among forty military units in Israel.

David prevailed over the Philistine with just the sling and the stone. He struck down the Philistine and killed him. David did not even have a sword in his hand.

But God chose what the world thinks foolish to shame the wise, and God chose what the world thinks weak to shame the strong.