'Plowing' in the Bible

For these past two years there has been famine in the land and for five more years there will be neither plowing nor harvesting.

"On six days you may labor, but on the seventh day you must rest; even at the time of plowing and of harvest you are to rest.

Elijah went from there and found Elisha son of Shaphat. He was plowing with twelve pairs of oxen; he was near the twelfth pair. Elijah passed by him and threw his robe over him.

and a messenger came to Job, saying, "The oxen were plowing and the donkeys were grazing beside them,

Does a farmer just keep on plowing at planting time? Does he keep breaking up and harrowing his ground?

The oxen and donkeys used in plowing will eat seasoned feed winnowed with a shovel and pitchfork.

"Would any one of you say to your slave who comes in from the field after plowing or shepherding sheep, 'Come at once and sit down for a meal'?

Or is he not surely speaking for our benefit? It was written for us, because the one plowing and threshing ought to work in hope of enjoying the harvest.