That they compass sea and land signifies that throughout the whole world they shall be enemies of Christ’s Gospel, and shall bring men under the yoke of the Law against the justification of faith. There were proselytes made into the Synagogue from among the Gentiles, the small number of whom is here denoted by what is said “one proselyte.” For after the preaching of Christ there was no faith left in their doctrine, but whoever was gained to the faith of the Jews became a child of hell.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).