In that day also he shall come - Bp. Newcome translates: -
"And in that day they shall come unto thee
From Assyria and the fenced cities;
And from Egypt even unto the river."
Calmet translates: -
"They shall come to thee from Assyria even unto Egypt;
And from Egypt even to the river; (Euphrates);
And from one sea to another, and from one mountain to another."
This, says he, gives an easy sense; whereas we cannot tell where to find those fortified cities spoken of by other translators. The Israelites were to return from their captivity, and re-occupy their ancient country from Assyria to Egypt; that is, from the river Euphrates to the river Nile; and from the Mediterranean Sea to the Ocean, and from Mount Libanus to the mountains of Arabia Petraea, or Mount Seir. See Amos 8:12. This prediction was literally fulfilled under the Asmoneans. The Jewish nation was greatly extended and very powerful under Herod, at the time that our Lord was born. See Calmet.