Where faith is not continually kept in motion and exercised, it weakens and decreases, so that it must indeed vanish; and yet we do not see nor feel this weakness ourselves, except in times of need and temptation, when unbelief rages too strongly; and yet for that very reason faith must have temptations in which it may battle and grow.

Music must be supported by the king and the princes, for the maintenance of the arts is their duty no less than the maintenance of the laws.

No man should be alone when he opposes Satan. The Church and the ministry of the Word were instituted for this purpose, that hands may be joined together and one may help another.

The offering of [the body] is called a spiritual sacrifice because it is freely sacrificed through the Spirit, the Christian being uninfluenced by the constrainst of the Low or the fear of hell.

Reason should be destroyed in all Christians.

But what will happen even if we do burn down the Jews synagogues and forbid them publicly to praise God, to pray, to teach, to utter God's name? They will still keep doing it in secret. If we know that they are doing this in secret, it is the same as if they were doing it publicly. for our knowledge of their secret doings and our toleration of them implies that they are not secret after all and thus our conscience is encumbered with it before God.

The gospel cannot be preached and heard enough, for it cannot be grasped well enough ... Moreover, our greatest task is to keep you faithful to this article and to bequeath this treasure to you when we die.