Personally, I don't believe in God. Therefore, I don't think that God was ever the one to create us.
I do, however agree on time and space being infinite. I don't believe it ever had a beginning or will ever have an ending.
said, it's just there. We can't influence anything that happens, but I think it is possible to bend it in a way that can work to our advantage (relativity). Even so, bending it wouldn't change anything, would it? It would only change how we
see things. For all we know, nothing will have changed.
Influencing and bending time and space are completely different in my opinion, and so, I think agree with what you both have to say.