Job 39:4

“Their young ones are in good liking, etc.] Plump, fat, and sleek, as fawns are: they grow up with corn; by which they grow, or without in the field, as the word also signifies; and their growth and increase is very quick, as Aristotle observes f1352; they go forth, and return not unto them: they go forth into the fields, and shift and provide for themselves, and trouble their dams no more; and return not to them, nor are they known by them.”

“are in good liking--in good condition, grow up strong. with corn--rather, "in the field," without man's care. return not--being able to provide for themselves.”

“Their young ones are in good liking - Hebrew “they are fat;” and hence, it means that they are strong and robust. They grow up with corn - Herder, Gesenius, Noyes, Umbreit, and Rosenmuller render this, “in the wilderness,” or “field.” The proper and usual meaning of the word used here (בר bâr) is corn (grain); but in Chaldee it has the sense of open fields, or country. The same idea is found in the Arabic, and this sense seems to be required by the connection. The idea is not that they are nurtured with grain, which would require the care of man, but that they are nurtured under the direct eye of God far away from human dwellings, and even when they go away from their dam and return no more…”

“Young ones - Notwithstanding their great weakness caused by their hard entrance into the world. Grow up - As with corn, that is, as if they were fed with corn. Go forth - Finding sufficient provisions abroad by the care of God's providence. Job 39:5”