When praying and saying glory be to God, it is showing reverence and God deserves all the glory, praise and continual thanks. He has given us everything and we are to show appreciation and we do that by giving glory to Him. It can be said, just as we say "Glory be to God...", but also shown in our actions and how we treat other people. So the next time you have a moment, always be sure to give the glory to God by doing something kind for others and to be thinking of how you would want to be treated.