If as you say “we can never understand anything about the infinite God,” then what is even left in the concept you have of your God? It would seem that you cannot have any concept of it since if you did, you would be understanding at least that aspect of it (that aspect which you have formed a concept of). How can one love something of which (one has no concept? How can one even meaningfully believe in the existence of such a thing? It would be like saying, “I believe (in the existence of this, well I can’t conceptualize it at all whatsover and I don’t understand it at all whatsoever but nevertheless, whatever it is, I think, nay I know it exists! O and furthermore, I love it. I have no understanding whatsoever of any aspect of it, but I love it all the same!” That would be like believing in the existence of an ice cream flavor that one has no concept of and loving that flavor without having any understanding, let alone experience of it.