And Jonathan said to the young man that bare his armour, Come, and let us go over unto the garrison of these uncircumcised: it may be that the Lord will work for us: for there is no restraint to the Lord to save by many or by few. (1 Samuel 14:6)
Jonathan did not depend so much on his armor as on the unlimited power of God. He simply used that which he had at hand, and God blessed his humble dependence on Heaven. Even if the king should turn aside from the path of obedience, God proposed to prove to all Israel that salvation is a matter of individual choice and action, and not so much a mass movement. How tragic the situation would have been had God rejected all Israel when the king chose not to obey.