Of which salvation the prophets have inquired and searched diligently, who prophesied of the grace that should come unto you:

Concerning which salvation the prophets sought and searched diligently, who prophesied of the grace that'should come unto you:

Of which salvation the prophets have inquired and diligently searched, who prophesied of the grace to come in you.

Concerning which salvation prophets, who have prophesied of the grace towards you, sought out and searched out;

concerning which salvation seek out and search out did prophets who concerning the grace toward you did prophecy,

There were Prophets who earnestly inquired about that salvation, and closely searched into it - even those who spoke beforehand of the grace which was to come to you.

For the prophets who gave the news of the grace which would come to you, made search with all care for knowledge of this salvation;

It was this salvation that the prophets, who spoke long ago of the blessing intended for you, sought, and strove to comprehend;

Of which salvation Had not the fathers the same salvation as we have? Why then does he say that the fathers inquired, as though they possessed not what is now offered to us? The answer to this is plain, that salvation is to be taken here for that clear manifestation of it which we have through the coming of Christ. The words of Peter mean no other thing than those of Christ, when he said, "Many kings and prophets have desired to see the things which ye see, and have not seen them." (Matthew 13:17.) As then the prophets had but a limited knowledge of the grace brought by Christ, as to its revelation they justly desired something more. When Simeon, after seeing Christ, prepared himself calmly and with a satisfied mind for death, he shewed that he was before unsatisfied and anxious. Such was the feeling of all the godly.

Of which salvation - Of the certainty that this system of religion, securing the salvation of the soul, would be revealed. The object of this reference to the prophets seems to be to lead them to value the religion which they professed more highly, and to encourage them to bear their trials with patience. They were in a condition, in many respects, far superior to that of the prophets. They had the full light of the gospel. The prophets saw it only at a distance and but dimly, and were obliged to search anxiously that they might understand the nature of that system of which they were appointed to furnish the comparatively obscure prophetic intimations.
The prophets - This language would imply that this had been a common and prevalent wish of the prophets.
Have enquired - This word is intensive. It means that they sought out, or scrutinized with care the revelations made to them, that they might understand exactly what was implied in that which they were appointed to record in respect to the salvation which was to be made known through the Messiah. See the following places where the same word is used which occurs here: Luke 11:50-51; Acts 15:17; Romans 3:11; Hebrews 11:6; Hebrews 12:17.
And searched diligently - ἐξερευνάω exereunaō. Compare Daniel 9:2-3. The word used here means to search out, to trace out, to explore. It is not elsewhere used in the New Testament, though one of the words from which this is compounded (ἐρευνάω ereunaō) occurs. See John 5:39, (Notes) John 7:52; Romans 8:27; 1-Corinthians 2:10; Revelation 2:23. The idea is, that they perceived that in their communications there were some great and glorious truths which they did not fully comprehend, and that they diligently employed their natural faculties to understand that which they were appointed to impart to succeeding generations. They thus became students and interpreters for themselves of their own predictions. They were not only prophets, but men. They had souls to be saved in the same way as others. They had hearts to be sanctified by the truth; and it was needful, in order to this, that truth should be applied to their own hearts in the same way as to others. The mere fact that they were the channels or organs for imparting truth to others would not save them, any more than the fact that a man now preaches truth to others will save himself, or than the fact that a sutler delivers bread to an army will nourish and support his own body.
Who prophesied of the grace that should come unto you - Of the favor that should be shown to you in the gospel. Though the predictions which they uttered appeared to the people of their own times, and perhaps to themselves, obscure, yet they were in fact prophecies of what was to come, and of the favors which, under another dispensation, would be bestowed upon the people of God. The apostle does not mean to say that they prophesied particularly of those persons to whom he was then writing, but that their prophecies were in fact for their benefit, for the things which they predicted had actually terminated on them. The benefit was as real as though the predictions had been solely on their account.

Of which salvation the prophets have inquired - The incarnation and suffering of Jesus Christ, and the redemption procured by him for mankind, were made known, in a general way, by the prophets; but they themselves did not know the time when these things were to take place, nor the people among and by whom he was to suffer, etc.; they therefore inquired accurately or earnestly, εξεζητησαν, and searched diligently, εξηρευνησαν, inquiring of others who were then under the same inspiration, and carefully searching the writings of those who had, before their time, spoken of these things. The prophets plainly saw that the grace which was to come under the Messiah's kingdom was vastly superior to any thing that had ever been exhibited under the law; and in consequence they made all possible inquiry, and searched as after grains of gold, hidden among sand or compacted with ore, (for such is the meaning of the original word), in order to ascertain the time, and the signs of that time, in which this wondrous display of God's love and mercy to man was to take place; but all that God thought fit to instruct them in was what is mentioned 1-Peter 1:12.

(3) Of which salvation the prophets have enquired and searched diligently, who prophesied of the grace [that should come] unto you:
(3) He makes a difference between true faith, that is to say, that faith which only has an eye to the doctrine of the prophets and apostles, and false faith. Afterward he makes two degrees of one and the same faith, according to the manner of the various revelations, when as in deed it is but one only faith. Thirdly, he says that the preaching of the apostles is the fulfilling of the preaching of the prophets, although the latter end of it be as yet looked for by the very angels.

Of which salvation the prophets have inquired,.... They greatly desired the coming of the Saviour, and to see him; they longed after the salvation to be accomplished by him, and expressed their wishes for him, and that; and inquired into the nature of it, and gave an account thereof, according to the measure of light and knowledge communicated to them; they pointed out Christ as a Redeemer of his people, and his salvation as spiritual and eternal:
and searched diligently; in the use of means; by prayer and supplication; by reading the prophecies that went before; by observing the types, shadows, and sacrifices of the law; and by waiting upon the Lord for the inspiration of his Spirit. This last clause is omitted in the Syriac version, but rightly retained in all others:
who prophesied of the grace; that should come unto you; Jews, and also the Gentiles. They prophesied both of Christ, who is the unspeakable gift of God's free grace, who is full of grace, and by whom it comes; and also of the several blessings of grace through Christ, as of redeeming grace from sin, Satan, death, and the grave; of justifying grace, through his righteousness, he being the Lord our righteousness, in whom all the seed of Israel shall be justified, and glory; for though his righteousness is revealed without the law, yet it is witnessed to by law and prophets; of pardoning grace, as with God, and as a blessing of the new covenant, and as received through faith in Christ, to which give all the prophets witness; of adopting grace, both to Jews and Gentiles, signifying, that where they were not called the people of God, they should be called the sons of God; of regenerating and sanctifying grace, in giving a new heart and Spirit, in sprinkling with clean water, in writing the laws of God in the inward parts, and pouring out the Spirit in a plenteous manner on all sorts of men; of persevering grace, intimating that they that fear the Lord shall not depart from him, and that his loving kindness shall never depart from them; and of eternal life and glory, as God's free gift, which is that everlasting salvation, they say, Israel shall be saved in the Lord with.

Jesus Christ was the main subject of the prophets' studies. Their inquiry into the sufferings of Christ and the glories that should follow, would lead to a view of the whole gospel, the sum whereof is, That Christ Jesus was delivered for our offences, and raised again for our justification. God is pleased to answer our necessities rather than our requests. The doctrine of the prophets, and that of the apostles, exactly agree, as coming from the same Spirit of God. The gospel is the ministration of the Spirit; its success depends upon his operation and blessing. Let us then search diligently those Scriptures which contain the doctrines of salvation.

The magnitude of this "salvation" is proved by the earnestness with which "prophets" and even "angels" searched into it. Even from the beginning of the world this salvation has been testified to by the Holy Spirit.
prophets--Though there is no Greek article, yet English Version is right, "the prophets" generally (including all the Old Testament inspired authors), as "the angels" similarly refer to them in general.
inquired--perseveringly: so the Greek. Much more is manifested to us than by diligent inquiry and search the prophets attained. Still it is not said, they searched after it, but concerning (so the Greek for "of") it. They were already certain of the redemption being about to come. They did not like us fully see, but they desired to see the one and the same Christ whom we fully see in spirit. "As Simeon was anxiously desiring previously, and tranquil in peace only when he had seen Christ, so all the Old Testament saints saw Christ only hidden, and as it were absent--absent not in power and grace, but inasmuch as He was not yet manifested in the flesh" [CALVIN]. The prophets, as private individuals, had to reflect on the hidden and far-reaching sense of their own prophecies; because their words, as prophets, in their public function, were not so much their own as the Spirit's, speaking by and in them: thus Caiaphas. A striking testimony to verbal inspiration; the words which the inspired authors wrote are God's words expressing the mind of the Spirit, which the writers themselves searched into, to fathom the deep and precious meaning, even as the believing readers did. "Searched" implies that they had determinate marks to go by in their search.
the grace that should come unto you--namely, the grace of the New Testament: an earnest of "the grace" of perfected "salvation . . . to be brought at the (second) revelation of Christ." Old Testament believers also possessed the grace of God; they were children of God, but it was as children in their nonage, so as to be like servants; whereas we enjoy the full privileges of adult sons.

Of which salvation the prophets have enquired. This passage implies that the prophets used words and symbols, at the dictation of the Spirit, of which they did not comprehend the full meaning. They spoke of Christ and salvation, and then diligently inquired what the Spirit of Christ in them did signify by these words.
When it testified . . . the sufferings. They spoke of the sufferings of Christ (see Isaiah, chapter 53) but could not understand these predictions any better than the Jews of Christ's time. See Luke 24:25-26.
Unto whom it was revealed. The prophets were, however, taught that the subject matter of their predictions related to a future time, not to their own.
They did minister the things. The things which were fulfilled by the gospel preached . . . unto you. Paul and his companions, who preached under the influence of the Holy Spirit.
Which things the angels desire to look into. The profound mysteries of the gospel were subjects of earnest inquiry to the angels, an indication that like the prophets they could not understand until the mystery was revealed.

Of which salvation - So far beyond all that was experienced under the Jewish dispensation. The very prophets who prophesied long ago of the grace of God toward you - Of his abundant, overflowing grace to be bestowed on believers under the Christian dispensation. Inquired - Were earnestly inquisitive. And searched diligently - Like miners searching after precious ore, after the meaning of the prophecies which they delivered.