Complete Commentary on the Whole Bible, by Matthew Henry, at sacred-texts.com
(Sa1 13:1-7) The invasion of the Philistines.
(Sa1 13:8-14) Saul sacrifices, He is reproved by Samuel.
(Sa1 13:15-23) The policy of the Philistines.
Saul reigned one year, and nothing particular happened; but in his second year the events recorded in this chapter took place. For above a year he gave the Philistine time to prepare for war, and to weaken and to disarm the Israelites. When men are lifted up in self-sufficiency, they are often led into folly. The chief advantages of the enemies of the church are derived from the misconduct of its professed friends. When Saul at length sounded an alarm, the people, dissatisfied with his management, or terrified by the power of the enemy, did not come to him, or speedily deserted him.
Saul broke the order expressly given by Samuel, see Sa1 10:8, as to what should be done in cases of extremity. Saul offered sacrifice without Samuel, and did it himself, though he was neither priest nor prophet. When charged with disobedience, he justified himself in what he had done, and gave no sign of repentance for it. He would have this act of disobedience pass for an instance of his prudence, and as a proof of his piety. Men destitute of inward piety, often lay great stress on the outward performances of religion. Samuel charges Saul with being an enemy to himself. Those that disobey the commandments of God, do foolishly for themselves. Sin is folly, and the greatest sinners are the greatest fools. Our disposition to obey or disobey God, will often be proved by our behaviour in things which appear small. Men see nothing but Saul's outward act, which seems small; but God saw that he did this with unbelief and distrust of his providence, with contempt of his authority and justice, and with rebellion against the light of his own conscience. Blessed Saviour, may we never, like Saul, bring our poor offerings, or fancied peace-offerings, without looking to thy precious, thy all-sufficient sacrifice! Thou only, O Lord, canst make, or hast made, our peace in the blood of the cross.
See how politic the Philistines were when they had power; they not only prevented the people of Israel from making weapons of war, but obliged them to depend upon their enemies, even for instruments of husbandry. How impolitic Saul was, who did not, in the beginning of his reign, set himself to redress this. Want of true sense always accompanies want of grace. Sins which appear to us very little, have dangerous consequences. Miserable is a guilty, defenceless nation; much more those who are destitute of the whole armour of God.