God acts on nature at such a level that He can determine or predetermine the outcome of anything that is subject to chance so anything can happen the way He wants it to happen in the natural world at that level. Hence water into wine. Given this it is clear our hearts could stop or we could cease to exist physically speaking if He determined it but it is in His goodness He maintains things as they are so we have peace in our minds. Only in exceptional occassions does He disrupt the natural order He has created. When He does so it is seen as a miracle but it is also revealing things about God in a special way and is a message from God Himself to all who can discern it: Like water into wine.
