1 Samuel 17:11

Afraid — This may seem strange, considering the glorious promises, and their late experience of divine assistance. And where was Jonathan, who in the last war had so bravely engaged an whole army of the Philistines? Doubtless he did not feel himself so stirred up of God as he did at that time. As the best, so the bravest of men, are no more than what God makes them. Jonathan must sit still now, because this honour is reserved for David.