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A preacher must be both soldier and shepherd. He must nourish, defend, and teach; he must have teeth in his mouth, and be able to bite and fight.

Martin Luther (1818). “The familiar discourses of dr. Martin Luther, tr. by H. Bell”, p.241
A preacher must be both soldier and shepherd. He must nourish, defend, and teach; he must have teeth in his mouth, and be able to bite and fight.