'Plow' in the Bible

Jesus told him, "No one who puts his hand to the plow and looks back is fit for the kingdom of God."

"Then the servant manager told himself, "What should I do? My master is taking my position away from me. I'm not strong enough to plow, and I'm ashamed to beg.

Isn't he really speaking for our benefit? Yes, this was written for our benefit, because the one who plows should plow in hope, and the one who threshes should thresh in hope of sharing in the crop.