Theophylact of Ohrid

But this bread, being essentially life, (for He is the Son of the living Father,) in quickening all things, does but what is natural to Him to do. For as natural bread supports our weak flesh, so Christ, by the operations of the Spirit, gives life to the soul; and even incorruption to the body, (for at the resurrection the body will be made incorruptible.) Wherefore He says, that He giveth life unto the world.