... is there any reason why this thread is under Adults and disagreements?
Anyways, those are interesting questions. I can't help but notice how much separation is implied when we speak in these terms, though.
From the perspective of oneness, how is time even a meaningful concept? As you pointed out, if past, present and future are viewed as one, then there is no distinction between one moment and the next as we typically do. This would in turn render the second question meaningless, because there is basically no such thing as time from that perspective. As for the first question, obviously one would have to say "no" by virtue of the accepted definition of God. However, I think it would be a mistake to separate God and things that exist in relativity. I mean, how does something completely separate has an influence upon another? As you can probably guess, I am not going by the typical idea of God that most people have in mind. In any case, just as God would not need time, I don't think a Christian needs to entertain these thoughts, even if they may be worthy ones. (nothing wrong with it, just saying it's not necessary) Just as time is something that can be changed, so are our minds, and as such they cannot contain ultimate reality, which would be unchanging.