W. Austin Gardner
Chocolate Soldiers

DAVID--the man after God's own heart--was a man of war and a mighty man of valour. When all Israel were on the run, David faced Goliath--alone ... with God--and he but a stripling, and well scolded too by his brother for having come to see the battle.
What a splendid fool Eliab must have been! as though David would go to see a battle and not stay to fight. THEY ARE CHOCOLATE SOLDIERS WHO MERELY GO TO SEE BATTLES, AND COOLLY URGE OTHERS TO FIGHT THEM.
They had better save their journey money and use it to send out real fighters instead. Soldiers don't need dry nurses, and if they did the Holy Ghost is always on the spot and ready to undertake any case on simple application.
No! David went to the battle and stayed to fight, and won! Wise beyond his years, he had no use for Saul's armour. It cramped his freedom of action. He tried it on and took it off, quick sharp. And, besides, it made such a ghastly rattle, even when he walked, that he could not hear the still small voice of God, and would never have heard Him saying afterwards, "This is the way to the brook, David! and there are the five smooth stones!
Trust only in Me and them. Your own home-made sling will do first class, and there! that's the shortest cut to Goliath." THE CHOCOLATES RAN AWAY--they were all Chocolates--but David ran upon Goliath. One smooth stone was enough.
David's secret was that he had but one Director, and He, the Infallible One. He directed the stone, as He directed the youth. Too many directors spoil the sport, and two are too many by just one. Thus Christ said to His soldiers: "HE shall teach you all things, HE shall guide you into all the truth."
C T Studd, The Chocolate Soldier