In the furrow, i.e. in thy furrowed field, by a metonymy. Or, to or for (as the prefix beth is oft used, as Genesis 11:4 Leviticus 16:22 Job 24:5) the furrow, i.e. to make furrows, or to plough; for which work cattle use to be bound together, that they may be directed by the husbandman, and may make right furrows. The valleys, to wit, the low grounds, which are most proper for and most employed in the work of ploughing. After thee; under thy conduct, following thee step by step.
Related Commentaries of Job 39:10
Job 39:10
10 Canst thou bind the unicorn with his band in the furrow? or will he harrow the valleys after thee?