Charles H. Spurgeon on Psalms 150:2

Praise him for his mighty acts. Here is a reason for praise. In these deeds of power we see himself. These doings of his omnipotence are always on behalf of truth and righteousness. His works of creation, providence, and redemption, all call for praise; they are his acts, and his acts of might, therefore let him be praised for them. Praise him according to his excellent greatness. His being is unlimited, and his praise should correspond therewith. He possesses a multitude or a plenitude of greatness, and therefore he should be greatly praised. There is nothing little about God, and there is nothing great apart from him. If we were always careful to make our worship fit and appropriate for our great Lord how much better should we sing! How much more reverently should we adore! Such excellent deeds should have excellent praise.