Charles H. Spurgeon on Psalms 18:30

"As for God, his way is perfect." Far past all fault and error are God's dealings with his people; all his actions are resplendent with justice, truth, tenderness, mercy, and holiness. Every way of God is complete in itself, and all his ways put together are matchless in harmony and goodness. Is it not very consolatory to believe that he who has begun to bless us will perfect his work, for all his ways are "perfect." Nor must the divine "word" be without its song of praise. "The word of the Lord is tried," like silver refined in the furnace. The doctrines are glorious, the precepts are pure, the promises are faithful, and the whole revelation is superlatively full of grace and truth. David had tried it, thousands have tried it, we have tried it, and it has never failed. It was meet that when way and word had been extolled, the Lord himself should be magnified; hence it is added, "He is a buckler to all those that trust in him." No armour of proof or shield of brass so well secures the warrior as the covenant God of Israel protects his warring people. He himself is the buckler of trustful ones; what a thought is this! What peace may every trusting soul enjoy!