Egypt is like a very fair heifer - Fruitful and useful; but destruction cometh out of the north, from Chaldea. It may be that there is an allusion here to Isis, worshipped in Egypt under the form of a beautiful cow.
Is like - Or, is. Her god was the steer Apis Jeremiah 46:15, and she is the spouse.
But destruction cometh; it cometh out of the north - More probably, “a gadfly from the north has come upon her.” This is a sort of insect which stings the oxen and drives them to madness. Compare Isaiah 7:18.