"In Rev. 4:11 we find the basis of God's claim upon his creatures as follows:– "Thou art worthy, O Lord, to receive glory and honour and power:
---for thou hast created all things,
---and for thy pleasure they are and were created."
It is because God has created us that he has a right to our service.
A: Because God created us and all things that we enjoy, and they did not. Paul says: "There be gods many and lords many, but to us there is but one God, the father, of whom are all things, and we are in him." 1 Cor. 8:5, 6." E.J. Waggoner