Complete Commentary on the Whole Bible, by Matthew Henry, at sacred-texts.com
(Sa1 5:1-5) Dagon is broken before the ark.
(Sa1 5:6-12) The Philistine smitten.
See the ark's triumph over Dagon. Thus the kingdom of Satan will certainly fall before the kingdom of Christ, error before truth, profaneness before godliness, and corruption before grace in the hearts of the faithful. When the interests of religion seem to be ready to sink, even then we may be confident that the day of their triumph will come. When Christ, the true Ark of the covenant, really enters the heart of fallen man, which is indeed Satan's temple, all idols will fall, every endeavour to set them up again will be vain, sin will be forsaken, and unrighteous gain restored; the Lord will claim and possess the throne. But pride, self-love, and worldly lusts, though dethroned and crucified, still remain within us, like the stump of Dagon. Let us watch and pray that they may not prevail. Let us seek to have them more entirely destroyed.
The hand of the Lord was heavy upon the Philistines; he not only convinced them of their folly, but severely chastised their insolence. Yet they would not renounce Dagon; and instead of seeking God's mercy, they desired to get clear of his ark. Carnal hearts, when they smart under the judgments of God, would rather, if it were possible, put him far from them, than enter into covenant or communion with him, and seek him for their friend. But their devices to escape the Divine judgments only increase them. Those that fight against God will soon have enough of it.