Matthew 24:14

When every nation shall have heard the preaching of the Gospel, then shall come the end of the world. For at this time there are many nations, not of barbarians only, but of our own, who have not yet heard the word of Christianity. Morally; He who shall see that glorious second coming of the word of God into his soul, must needs suffer in proportion to the measure of his proficiency assaults of opposing influences, and Christ in him must be hated by all, not only by the nations literally understood, but by the nations of spiritual vices. And in such enquiries there will be few who shall reach the truth with any fulness, the more part shall be offended and fall therefrom, betraying and accusing one another because of their disagreement respecting doctrines, which shall give rise to a mutual hatred. Also there shall be many setting forth unsound words concerning things to come, and interpreting the Prophets in a manner in which they ought not; these are the false Prophets who shall deceive many, and who shall cause to wax cold that fervour of love which was before in the simplicity of the faith. But he who can abide firmly in the Apostolic tradition, he shall be saved; and the Gospel being preached to the minds of all shall be for a testimony to all nations, that is, to all the unbelieving thoughts of the soul.

This, we may observe, He saith elsewhere also; "This gospel shall be preached in all the world for a testimony to all the nations, and then shall the end come;" to the nations, to them that obey not, to them that believe not. Thus, lest any one should say, "And wherefore preach to all, if all are not to believe?"-it is that I may be found to have done all my own part, and that no man may hereafter be able to find fault, as though he had not heard. For the very preaching shall bear witness against them, and they will not be able hereafter to say, "We heard not;" for the word of godliness "hath gone out unto the ends of the world."

For in proof that He meant this, and that before the taking of Jerusalem the gospel was preached, hear what Paul saith, "Their sound went into all the earth;" and again, "The gospel which was preached to every creature which is under Heaven." And seest thou him running from Jerusalem unto Spain? And if one took so large a portion, consider what the rest also wrought. For writing to others also, Paul again saith concerning the gospel, that "it is bringing forth fruit, and growing up in every creature which is under Heaven." But what meaneth, "For a witness to all nations?" Forasmuch as though it was everywhere preached, yet it was not everywhere believed. It was for a witness, He saith, to them that were disbelieving, that is, for conviction, for accusation, for a testimony; for they that believed will bear witness against them that believed not, and will condemn them. And for this cause, after the gospel is preached in every part of the world, Jerusalem is destroyed, that they may not have so much as a shadow of an excuse for their perverseness. For they that saw His power shine throughout every place, and in an instant take the world captive, what excuse could they then have for continuing in the same perverseness? For in proof that it was everywhere preached at that time, hear what Paul saith, "of the gospel which was preached to every creature which is under Heaven." Which also is a very great sign of Christ's power, that in twenty or at most thirty years the word had reached the ends of the world. "After this therefore," saith He, "shall come the end of Jerusalem." For that He intimates this was manifested by what follows.

And the sign of the Lord's second coming is, that the Gospel shall be preached in all the world, so that all may be without excuse.

(Ep. 199, 46.) But that this preaching the Gospel of the kingdom in all the world was accomplished by the Apostles, we have not any certain evidence, to prove. There are numberless barbarous nations in Africa, among whom the Gospel is not even yet preached, as it is easy to learn from the prisoners who are brought from thence. But it cannot be said that these have no part in the promise of God. For God promised with an oath not the Romans only, but all nations to the seed of Abraham. But in whatever nation there is yet no Church established, it must needs be that there should be one, not that all the people should believe; for how then should that be fulfilled, Ye shall be hated of all nations for my name's sake, unless there be in all nations those who hate and those; who are hated? That preaching therefore was not accomplished by the Apostles, while as yet there were nations among whom it had not begun to be fulfilled. The words of the Apostle also, Their sound hath gone out into all the world, though expressed as of time past, are meant to apply to something future, not yet completed; as the Prophet, whose words he quotes, said that the Gospel bore fruit and grew in the whole world (Ps. 19:4.), to show thereby to what extent its growth should come. If then we know not when it shall be that the whole world shall be filled with the Gospel, undoubtedly we know not when the end shall be; but it shall not be before such time.