Yahweh is not separate from creation in His reign and rule. He reigns in righteousness because He is righteous. God rules over the hosts of heaven because He alone created all things, and He alone sustains all things by the might of His power. In grace He chooses to lovingly interact with His creation because He is the only gracious and wise God. Whether we acknowledge these facts does not hinder or help Him in any way. So why did Israel acknowledge the Lord’s rule?
Israel understood pragmatically that their health (mental, physical and spiritual) rested in God’s loving kindness. Israel understood observationally that their progress as a people was bound only by the limits their God set. Israel understood experientially that their destiny was inextricably tied to the sovereign will of their God. Thus, it behooved them to acknowledge the Lord’s rule (Psalm 92).
From everlasting to everlasting the Lord has not changed. He rules in righteousness. He reigns in holiness. He orchestrates the affairs of men according to the wise counsel of His good pleasure. He is not absent from His creation, but continues to be a very present help in the calamities of life (Psalm 46:1). Thus, it is incumbent on us to acknowledge His rule (Proverbs 3:5-6).