'Plough' in the Bible

And Ephraim is a trained heifer -- loving to thresh, And I -- I have passed over on the goodness of its neck, I cause one to ride Ephraim, Plough doth Judah, harrow for him doth Jacob.

Do horses run on a rock? Doth one plough it with oxen? For ye have turned to gall judgment, And the fruit of righteousness to wormwood.

and Jesus said unto him, 'No one having put his hand on a plough, and looking back, is fit for the reign of God.'