Paul's exhortation to "do all to the glory of God" is more than pious idealism. It is an integral part of the sacred revelation and is to be accepted as the very Word of Truth. It opens before us the possibility of making every act of our lives contribute to the glory of God. Lest we should be too timid to include everything, Paul mentions specifically eating and drinking. This humble privilege we share with the beasts that perish. If these lowly animal acts can be so performed as to honor God, then it becomes difficult to conceive of one that cannot.
AW Tozer: The Pursuit of God