Behold, I will bring them from the north country, and gather them from the ends of the earth, and with them the blind and the lame, the woman with child and her that travails with child together: a great company shall return there.
All Commentaries on Jeremiah 31:8 Go To Jeremiah 31
Jerome
AD 420
If the intention of the Lord were not fulfilled and if his wrath had not remained on the head of the wicked, the Lord of all could not be the God of the tribes of Israel. But he addressed this only to the remnant who were saved. And if the objection should be posed to us that he said, “I will be the God of the Israelite race” or “of all the tribes of Israel,” we would cite, “If you were children of Abraham, you would do the works of your father,” as well as the apostle, who wrote, “Consider Israel according to the flesh,” which implies that there is another Israel according to the Spirit. They are Israel, therefore, who discern God with the mind or who remain most steadfast in the Lord. In this way, Israel will be the people of God.
