Thus the books of Moses and the prophets are the Gospel, since they have first preached and written of Christ that which the Apostles afterward preached and wrote. Yet there is a distinction between them. For although both, as to the letter, have been written out on paper, yet the Gospel, or the New Testament, cannot be said so properly to be written, but to have consisted in the living voice which published it, and was heard generally throughout the world. But that it should also have been written, is an extraneous matter. But the Old Testament was composed only in writing, and is therefore called the letter; and the Apostles give Scripture this same name also, as it only pointed to the Christ that was to come. But the Gospel is a living proclamation of Christ who has already come.
Besides, there is also a distinction among the books of the Old Testament. In the first place, there are the five books of Moses, the foundation of the Scriptures, and which are especially called the Old Testament. Then come both histories and books of narration, wherein examples of all kinds are recorded, whether of those who held or rejected the law of Moses. In the third place, there are the prophets that are based on Moses, and what he has written they have in clear language more fully explained and elucidated. But the bearing of all the prophets and of Moses is one and the same.
But you ought to understand also about that which men say, that the Old Testament is given up and laid by. In the first place, there is that distinction between the Old and New Testament, as we have said above, that the Old prefigured Christ, but that the New gives us that which was promised first in the Old, and pointed out to us by types. But these types have now ceased, because the end which they were to subserve has been answered and attained, and that which was prefigured by them has been fulfilled. So that now there should be no further distinctions of food, clothing, place and time. All are alike in Christ, in whom all has been fulfilled. The Jews have not been saved by this, for it was not given them to this end that it should make them holy, but to foreshadow to them the Christ who was to come.
Besides, in the Old Testament God introduced a twofold government,—an external and an internal. There He undertook to rule His people, both inwardly in the heart, and outwardly in person and in property. Therefore He gave them such a variety of laws, commingled one kind with the other. So it was under the government that pertained to the person, that a man might give his wife a bill of divorce and put her away.
But to the spiritual government pertained the command, Thou shalt love thy neighbor as thyself. But now He rules in us only spiritually, by Christ; while the government that pertains to the body and the outward state, he exercises through the instrumentality of civil magistracy. So that when Christ came the external ceased, and God gives us direction no more as to the outward person, time and place. But He rules us only spiritually through the word, so that we may direct as to all that is outward, and be bound in nothing that pertains to the body.
But what pertains to His spiritual government has not been abandoned, but stands forever, now as then,—the law of love to God and our neighbor, contained in the books of Moses, which God will still have sustained, and by which He will condemn all the unbelieving.
Besides, the figures, as to their spiritual import, remain; that is, whatever is signified by the outward figures, although the outward part has been done away. Thus that a man should separate from his wife and send her away, because of adultery, is a figure and type which even now is spiritually fulfilled; for thus also has God rejected the Jews when they would not believe on Christ, and has chosen out the Gentiles. So, also, He does still; if any one will not walk in the faith, He suffers him to be excluded from the Christian Church, that he may be led to reform.
Of a similar import also is this, that a woman after her husband's death must take her husband's brother, and bear him children, and he must suffer himself to be called by his name, and must enter on his possessions. This, although it has now ceased, or rather become invalid, so that it may be done or neglected without sin, is a figure which even now has a significance in respect to Christ. For He is our brother, for us has died and ascended to heaven, and has commanded us that we, through the Gospel, should plant the seed in our souls and make them fruitful, be named after him, and enter on his possessions. Therefore I must not boast that I convert men, but it must all be ascribed to the Lord Christ. It is the same also with all the other figures of the Old Testament, which it would be too tedious to specify.
But all in the Old Testament which is not external, is still in force, as all those passages in the prophets concerning faith and love. Wherefore Christ also confirms it in Mat. vii.: "All things whatsoever ye would that men should do unto you, do ye even so to them; for this is the law and the prophets." Besides, Moses and the prophets testify of the Christ that was to come. As, when I preach of Christ that He is the only Saviour by whom all must be saved, I may quote to sustain me the passage in Gen. xxii.: "In thy seed shall all nations be blessed." Thence I draw a living voice and language. Through Christ, who is Abraham's seed, must all men be blessed. From that it follows, that we were all cursed and condemned in Adam; wherefore it is necessary that we should believe on the Seed, if we would escape condemnation. Out of such passages may we lay down the ground of our faith, and let it remain, that we may therein see how they bear witness of Christ, so that our faith may be strengthened thereby. That is what St. Peter intends now by these words, in which he says:
V. 10. Of which Salvation the Prophets have searched and inquired diligently, who have prophesied of the grace that should come to you. In this same manner Paul also speaks, toward the close of the Epistle to the Romans, of the revelation of the mystery which was hidden from all ages of the world, but is now revealed and made known through the writings of the prophets. And so you find in the New Testament many passages quoted from the prophets, by which the Apostles show that all has been fulfilled just as the prophets foretold.
This Christ Himself proves from the prophet Isaiah, Mat. xi.: "The blind see, the lame walk," &c. As though He had said, just as it was written there it is taking place now; so also we read in Acts ix., of Paul, and in the xviii., of Apollos, how they confounded the Jews, and convinced them out of Scripture that this was the Christ. For whatever the prophets had foretold, all had now come to pass in Christ. So (Acts xv.) the Apostles show how the Gospel must be preached to the heathen that they might believe. This has also come to pass, and been put in train, so that the Jews might be convinced and compelled to confess, that all had taken place just as Scripture had foretold.
V. 11. And have investigated what or at what time the Spirit of Christ which was in them; St. Peter would say, although the prophets have not particularly known of a set and definite time, yet have they in general testified to all the circumstances of time and place;—as, that Christ should suffer, and what death he should die, and that the Gentiles should believe on him: so that one might certainly know by these signs when the time had come. The prophet Daniel has approached still nearer, but yet speaks somewhat darkly thereof, as to when Christ should suffer and die—when that or this should take place. So, also, they had a sure prophecy that the kingdom of the Jews should cease before Christ came. But the day and exact time when this should come to pass was not fixed. For it was enough when this time came, that they should thereby know for a surety that Christ was not far off. The prophet Joel also prophesied of the time when the Holy Spirit should come, where he says, "I will in the last days pour out my spirit upon all flesh," &c., which passage St. Peter quotes in Acts ii., and shows that he speaks of that very time and of the particular persons.
From all which you perceive how, with great diligence, the Apostles exhibit throughout the ground and confirmation of their preaching and doctrine. The Councils and the Popes now reverse this course, and would deal with us apart from Scripture, commanding us, by obedience to the church and the terrors of excommunication, that we should believe on them. The Apostles were filled with the Holy Spirit, and were certain that they were sent by Christ, and preached the true Gospel; yet they did not exalt themselves, and did not ask men to believe them, unless they conclusively proved from Scripture that it was just as they said, so that the mouth of the unbelieving was stopped, insomuch that they could object nothing further. And shall we believe those grossly unlearned heads who do not preach God's word at all, and can do nothing else but cry out continually, "Surely the fathers cannot have been in error, and this has been decided now for a long