What is this "something that does not exist"? You say that we have no evidence that other creations or times exist, but science postulates, presumably based on some degree of evidence, that our time-space continuum is lens shaped and limited. It cannot be lens shaped unless there is something beyond the borders of the lens, within which the lens sits. And if one time-space lens can sit within what is beyond it, then there is no reason to suppose that ours is the only time-space lens sitting within whatever is beyond ours.
So your claim that I am breaking the law of non-contradiction and saying that something that does not exist also exists, is fallacious. In fact, you admit immediately afterwards that other time-space lenses are not precluded. Now, whatever is beyond our space-time lens must be just as God-filled as our space-time lens is. And if our space-time lens was, in fact, created after some other space-time lenses were already extant within the medium beyond ours lens, then our space-time continuum would have to exist within some other greater space-time continuum, which would have to be ultimately infinite and uncaused, i.e. God.
So, you can see that conceiving of God as having time and space as aspects of His being, rather than time and space not being aspects of God's being, is not in any way heretical, since scripture does not declare one way or the other. In which case, each Christian is free to be persuaded by whichever argument makes most sense to them, and no Christian has the incontrovertible truth on this matter. Otherwise they would be claiming to comprehend with certainty secrets of God's incomprehensible nature that God has chosen not to reveal to us. And if they reject as siblings those who disagree on this issue, and demanding that all Christians must agree with them, they would be practising heresy, They would be committing heresy, which is to try to divide one the body of Christ into antagonistic parties.