There are two ways I can think of that this can happen:
- God creates the universe with age embedded in it.
- God creates the universe then, using only a 2nd dimension of time, ages the universe to perfection, then returns it to its current dimension. Thus no time would pass from the perspective of the 1st dimension.
I support #1 above, which would explain why Adam was created as a mature adult, etc.
#2 above, although easier to explain
scientifically, cannot be supported by Scripture, and is, in fact, a sort of modified Gap Theory. There's just no reason I can think of for God doing it this way, since
embedded age (defined as
maturity w/o history) would be much "easier." In addition, Adam would have had to have spent the first 30 years of his life in the 2nd dimension of time, as well as all the trees, animals, etc.