It is the part of a Christian to take care of his own body for the very purpose that, by its soundness and wellbeing, he may be enabled to labour, and to acquire and preserve property, for the aid of those who are in want, that thus the stronger member may serve the weaker member, and we may be children of God, and busy for one another, bearing one another's burdens, and so fulfiling the law of Christ.
Martin LutherOver against the devil and his missionaries, the authors of false doctrines and sects, we ought to be like the Apostle, impatient, and rigorously condemnatory, as parents are with the dog that bites their little one, but the weeping child itself they soothe.
Martin LutherBut know that to serve God is nothing else than to serve your neighbor and do good to him in love, be it a child, wife, servant, enemy, friend....If you do not find yourself among the needy and the poor, where the Gospel shows us Christ, then you may know that your faith is not right, and that you have not yet tasted of Christ's benevolence and work for you.
Martin Luther