1 Samuel 17:8-11

(8) And he stood and cried unto the armies of Israel, and said unto them, Why are ye come out to set your battle in array? am not I a Philistine, and ye servants to Saul? choose you a man for you, and let him come down to me. (9) If he be able to fight with me, and to kill me, then will we be your servants: but if I prevail against him, and kill him, then shall ye be our servants, and serve us. (10) And the Philistine said, I defy the armies of Israel this day; give me a man, that we may fight together. (11) When Saul and all Israel heard those words of the Philistine, they were dismayed, and greatly afraid.

See how guilt breeds fear: else wherefore did Saul and all Israel tremble? There was a time, when at the threats of the Ammonites, Saul hastened to the deliverance of the people, though only then coming from the herd of the field, and obtained a glorious victory. And now, though a king at the head of an army, he trembles. What made the difference? It is easily answered. The Spirit of the Lord came upon him, in the former instance, and inspired him with courage. But now, the Spirit of the Lord is departed from him, and all his confidence is fled. Oh! how sweet is it, Reader, to be under his blessed influence, whose strength is made perfect in the weakness of his people. What cannot a soul accomplish, when God leads that soul on? See 1 Samuel 11:6, compared with 1 Samuel 16:14; Zechariah 4:6.