Римлянам 10:18

But I say, Have they not heard?--"Did they not hear?" Can Israel, through any region of his dispersion, plead ignorance of these glad tidings? Yes, verily, their sound went--"their voice went out" into all the earth, and their words unto the end of the world--These beautiful words are from Psa 19:4. Whether the apostle quoted them as in their primary intention applicable to his subject (as OLSHAUSEN, ALFORD, &c.), or only "used scriptural language to express his own ideas, as is done involuntarily almost by every preacher in every sermon" [HODGE], expositors are not agreed. But though the latter may seem the more natural since "the rising of the Sun of righteousness upon the world" (Mal 4:2), "the Dayspring from on high visiting us, giving light to them that sat in darkness, and guiding our feet into the way of peace" (Luk 1:78-79), must have been familiar and delightful to the apostle's ear, we cannot doubt that the irradiation of the world with the beams of a better Sun by the universal diffusion of the Gospel of Christ, must have a mode of speaking quite natural, and to him scarcely figurative.

The dissolving of the peculiar church-state of the Jews, and the rejection of that polity by the repealing of their ceremonial law, the vacating of all the institutions of it, the abolishing of their priesthood, the burning of their temple, and the taking away of their place and nation, and in their room the substituting and erecting of a catholic church-state among the Gentile nations, though to us, now that these things have long since been done and completed, they may seem no great matter, yet to those who lived when they were doing, who knew how high the Jews had stood in God's favour, and how deplorable the condition of the Gentile world had been for many ages, it appeared very great and marvellous, and a mystery hard to be understood. The apostle, in this chapter, as in the foregoing and that which follows, is explaining and proving it; but with several very useful digressions, which a little interrupt the thread of his discourse. To two great truths I would reduce this chapter: - I. That there is a great difference between the righteousness of the law, which the unbelieving Jews were wedded to, and the righteousness of faith offered in the gospel (Rom 10:1-11). II. That there is no difference between Jews and Gentiles; but, in point of justification and acceptance with God, the gospel sets them both upon the same level (Rom 10:12 to the end).

10:18 Yes, they have: Paul quotes Ps 19:4 to show that the message of Good News was universally available through creation. And by the time Paul wrote Romans, early Christian missionaries had spread the Good News through most of the Roman Empire. Most Jews would have had ample opportunity to hear the message.