'Yoke' in the Bible

{And then} the nearest city to the slain one, the elders of that city shall take a heifer of the herd that has not been worked with [in the field], that has not pulled a yoke,

then you shall serve your enemies, whom Yahweh will send against you [under conditions of] famine, in thirst, in nakedness, and in lack of everything; and he shall place a yoke of iron on your neck {until he has destroyed you}.