Charles H. Spurgeon on Psalms 93:1

The LORD reigneth. These are the initial words of Ps 97:1 and Ps 99:1 also. Perhaps a threefold manner of reigning is suggested, namely, over things subjected to God by a natural necessity, over those that resist his will and as far as in them lies withdraw themselves from his dominion, and over those who spontaneously and freely obey. For in this place the Kingdom is declared to be coextensive with the foundation of the world: in Ps 97:1 it is hinted at for the exultation of the earth, and for the gladness of the isles; in Ps 99:1 God is said to reign, although the people are angry, and the earth is filled with commotion. Zorinus.