Bible Verses About Threshing: Of the labours of ministers

For it is written in the law of Moses: Thou shalt not muzzle the mouth of the ox that treadeth out the corn. Doth God take care for oxen?

Or doth he say this indeed for our sakes? For these things are written for our sakes: that he that plougheth, should plough in hope and he that thrasheth, in hope to receive fruit.