How big is the universe? If its size is finite, then what's on the other side of it? We have no satisfactory answer unless we accept infinity. If the universe did start off with the Big Bang, then what was it like before it and before the last "it"...? Is the expansion of the universe going to continue forever? Again, we can't say that there was a beginning or will be an end. We are compelled to admit that there must be an infinite God who exists forever. If there is a beginning and an end, they are in him.