Charles H. Spurgeon on Psalms 99:9

Exalt the LORD our God. A second time the delightful title of Jehovah our God is used, and it is quickly followed by a third. The Psalm is Trinitarian in its whole structure. In each of his sacred persons the Lord is the God of his people; the Father is ours, the Son is ours, and the Holy Spirit is ours: let us exalt him with all our ransomed powers. And worship at his holy hill. Where he appoints his temple let us resort. No spot of ground is now fenced about as peculiarly holy, or to be regarded as more sacred than another; yet his visible church is his chosen hill, and there would we be found, numbered with his people, and unite with them in worship. For the LORD our God is holy. Again this devout description is repeated, and made the climax of the song. Oh for hearts made pure within, so that we may rightly perceive and worthily praise the infinite perfection of the Triune Lord.