Calves—mostly, if not always, bull-calves—were largely used for food in Palestine, and in the households of the wealthy were fatted for the table. See, for example, the familiar parable of the prodigal son, in which the rejoicing father is mentioned as preparing a great feast in honour of his son's return, and ordering the fatted calf to be killed—the calf in question being evidently one of the animals that were kept in good condition against any festive occasion. And, even in the earliest history of the Bible, the custom of keeping a fatted calf evidently prevailed, as is shown by the conduct of Abraham, who, when he was visited by the three heavenly guests, "ran unto the herd, and fetched a calf, tender and good," and had it killed and dressed at once, after the still existing fashion of the East.
But, even in the times of Israel's greatest prosperity, the chief use of the ox was as an agricultural labourer, thus reversing the custom of this country, where the horse has taken the place of the ox as a beast of draught, and where cattle are principally fed for food. Ploughing was, and is, always performed by oxen, and allusions to this office are scattered plentifully through the Old and New Testaments.
When understood in this sense, oxen are almost always spoken of in connexion with the word "yoke," and as each yoke comprised two oxen, it is evident that the word is used as we employ the term "brace," or pair. The yoke, which is the chief part of the harness, is a very simple affair. A tolerably stout beam of wood is cut of a sufficient length to rest upon the necks of the oxen standing side by side, and a couple of hollows are scooped out to receive the crest of the neck. In order to hold it in its place, two flexible sticks are bent under their necks, and the ends fixed into the beam of the yoke. In the middle of this yoke is fastened the pole of the plough or cart, and this is all the harness that is used, not even traces being required.
It will be seen that so rude an implement as this would be very likely to gall the necks of the animals, unless the hollows were carefully smoothed, and the heavy beam adapted to the necks of the animals. This galling nature of the yoke, so familiar to the Israelites, is used repeatedly as a metaphor in many passages of the Old and New Testaments. These passages are too numerous to be quoted, but I will give one or two of the most conspicuous among them. The earliest mention of the yoke in the Scriptures is a metaphor.
After Jacob had deceived his father, in procuring for himself the blessing which was intended for his elder brother, Isaac comforts Esau by the prophecy that, although he must serve his brother, yet "it shall come to pass when thou shalt have the dominion, that thou shalt break his yoke from off thy neck." Again, in the next passage where the yoke is mentioned, namely, Lev. xxvi. 13, the word is employed in the metaphorical sense: "I am the Lord your God, which brought you forth out of the land of Egypt, that ye should not be their bondmen, and I have broken the bands of your yoke, and made you go upright."
"It is good for a man to bear the yoke in his youth."—Lam. iii. 27.
"He maketh them also to skip like a calf."—Psalm 6.
Then, in Deut. xxviii. 48, the word yoke is not only used metaphorically, but with an addition that forcibly expresses its weight and galling character: "Therefore shalt thou serve thine enemies, which the Lord shall send against thee, in hunger, and in thirst, and in nakedness, and in want of all things, and He shall put a yoke of iron upon thy neck, until He have destroyed thee."
The word yoke is also used as a metaphor for servitude, even of a domestic character, as we may see in 1 Tim. vi. 1: "Let as many servants as are under the yoke count their own masters worthy of all honour." In the Acts of the Apostles, we find St. Peter using the same metaphor: "Why tempt ye God, to put a yoke on the neck of the disciples, which neither our fathers nor we were able to bear?" And the Lord Himself uses the same metaphor in the well-known passage, "Take my yoke upon you, for my yoke is easy and my burden light."