This passage on pages 229 and 230 of John Piper's Providence
Our Joy in Creation Is Finally Joy in the Lord
Return with me now to Psalm 104, where I said we could see clearly the purpose of God to make the world a theater for his glory for the enjoyment of his people:
O Lord, how manifold are your works! In wisdom have you made them all. (Ps. 104:24)May the glory of the Lord endure forever. . . . I will sing to the Lord as long as I live; I will sing praise to my God while I have being. May my meditation be pleasing to him, for I rejoice in the Lord. (Ps. 104:31, 33–34)
The psalmist calls his psalm a “meditation” (or meditative praise: “May my meditation be pleasing to him”). He has been meditating on the world God creates and sustains and governs. The world of providence. What he has seen moved him to exult in God’s unparalleled wisdom in the countless natural wonders God creates and controls. “In wisdom have you made them all.” The glory of this wisdom, and its execution in power and goodness, causes the psalmist to sing and praise and rejoice in the Lord.
This is crucial to note: he rejoices “in the Lord” (104:34). Yes, he rejoices in the works of the Lord (as God himself does, 104:31). It would be an ungrateful sin not to. They are gifts and blessings. But when all is said and done and the psalmist hopes his meditation will be pleasing to God, the ground of his hope is this: “For I rejoice in the Lord” - not finally or fully in his works, but in himself. That is what creation is for. All of creation - in the skies above and on the earth beneath - is designed to reveal the glory of God. His glory, including his power, his divine nature, his understanding, his goodness - all these and more - is put on display in the theater of God’s glory called the natural world:
The heavens declare the glory of God, and the sky above proclaims his handiwork. (Ps. 19:1)
[God’s] invisible attributes, namely, his eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made. (Rom. 1:20)
The Lord is the everlasting God, the Creator of the ends of the earth. He does not faint or grow weary; his understanding is unsearchable. (Isa. 40:28)
The Lord is good to all, and his mercy is over all that he has made. (Ps. 145:9)