Psalm 104:1-4 God is King over all creation. He is above all. (Isaiah 40:12; 48:12-13)
Psalm 104:5-9 God set the boundaries for water. (Job 38:4-11)
Psalm 104:10-13 God is not only Creator but also sustainer. He makes sure everything gets the water it needs. He takes credit for the hydrologic cycle. (Psalm 147:8-9; Amos 9:5-6)
Psalm 104:14-18 God designed the ecosystems of interdependency among animals, providing habitats for even extreme conditions.
Psalm 104:19-23 God uses the sun and moon to help us have a rhythm to our days, months, and years. He has partitioned the day and night for humans and animals respectively.
Psalm 104:24-30 Now we take a praise break. Looking over all that God has made, His phenomenal engineering in the design as well as maintenance of creation, we feel overwhelmed by His majesty and wisdom. The book of Job describes the Leviathan in great detail (Job 41).
Psalm 104:31-35 We sing to God for His magnificence in creation. He is unique beyond comparison to anything or anyone else (Isaiah 40:12-26). As a result, He commands His people to recognize His oneness and sole role as our God. Furthermore, He seeks our wholehearted devotion to Him (Deuteronomy 6:4-5). This is our fitting response.