Synonyms: God deserves to be thought of in the loftiest of concepts. Humans can fathom only a small bit of what He actually is. Additional superlatives would be: amazing, fabulous, fantastic, incredible, superb, supernal.
Comment: God has everything and can lose nothing – no matter how much of Himself he gives away His infinity remains full. Even a human who has everything can afford to be magnanimous. How much more generous is The One who wants us to share in everything He is?