The another reason why we pray only for today’s bread is that Jesus teaches us to “live today”, to live this day. If we look at how the foundation of our lives is built up, we have to admit that we can only ever live for “today”. To be precise: we are only alive in the moment. Today is a series of the moments we encounter. And each of our lives is a series of such “todays”, single days.
This is a very simple truth, and we are designed to live our lives on this principle. To live today, this given day, is what we can do and what we are supposed to do.