But if you call yourself a Jew and rely on the law and boast in God

As he also says in Hosea, "I will call those [who were] not my people, 'My people,' and those [who were] not loved, 'Loved.'

For [there] is no distinction between Jew and Greek, for the same [Lord] [is] Lord of all, who is rich to all who call upon him.

How then will they call upon [him] in whom they have not believed? And how will they believe [in him] about whom they have not heard? And how will they hear about [him] without one who preaches [to them]?