For all works and things, which are either commanded or forbidden by God and thus have been instituted by the supreme Majesty, are 'musts.' Nevertheless, no one should be dragged to them or away from them by the hair, for I can drive no man to heaven or beat him into it with a club.
Martin LutherIt is as if a wolf devoured a sheep and the sheep were so powerful that it transformed the wolf and turned him into a sheep. So, when we eat Christ's flesh physically and spiritually, the food is so powerful that it transforms us.
Martin Luther