What is religion?
God's existence needs a belief. Someone who believes in his existence. This state of mind is based on faith. And faith is a sacred/religious concept. Then, God necessarily depends on all of these characteristics to exist himself. If you think deeply it would be even worthless the existence of God in a world without religion. What would be the aim of God then?
Check this paper:
The Kant-Friesian Theory of Religion and Religious Value
I have therefore found it necessary to deny knowledge, in order to make room for faith. The dogmatism of metaphysics, that is, the precondition that it is possible to make headway in metaphysics without a previous critique of pure reason, is the source of all that unbelief, always very dogmatic, which wars against morality. - Immanuel Kant,
Kritik der reinen Vernunft
Kant believed, indeed, that morality was what religion was all about and that it provided a basis for rational belief in concepts like God, freedom, and immortality; but this provided no ground for any other aspects of traditional religious practice, belief, or experience
:flower:
Rudolf Otto takes the Latin word numen, "the might of a deity, majesty, divinity" and coins the term "numinous" to describe either religious feelings or the religious aspect attributed by those feelings to experiences and objects. He characterizes the feelings as involving 1) ultimacy, 2) mystery (mysterium), 3) awe (tremendum), 4) fascination (fascinans), and 5) satisfaction. Unassociated with any objects, the sense of the numinous is a feeling of "daemonic dread," a sense of the uncanny, frightful, eerie, weird, or supernatural. These feelings make us feel vulnerable and overpowered, what Otto calls "creature feeling."
Conclusion: God depends on religion because the religious nature is how God is fed.