'Yoke' in the Bible

It shall be that the elders of the city which is nearest to the dead man shall take a heifer of the herd, one which has not been worked and which has not pulled in a yoke;

you will therefore serve your enemies whom the Lord sends against you, in hunger and in thirst, in nakedness and in lack of all things; and He will put an iron yoke [of slavery] on your neck until He has destroyed you.