From John Calvin:
Let the pastors boldly dare all things by the word of God. . . .
Let them constrain all the power, glory, and excellence of the world to give place to and to obey the divine majesty of this word.
Let them enjoin everyone by it, from the highest to the lowest.
Let them edify the body of Christ.
Let them devastate Satans reign.
Let them pasture the sheep, kill the wolves, instruct and exhort the rebellious.
Let them bind and loose thunder and lightning, if necessary, but let them do all according to the word of God.
Cited in John Piper, ed., With Calvin in the the Theater of God, pp. 136-37.