Old Covenant Saved?

Were the people of the Old Covenant saved has been a long asked question – the answer is yes because they searched diligently and looking forward to the Messiah.
[1 Pet. 1:10] Of which salvation the prophets have inquired and searched diligently, who prophesied of the grace that should come unto you:
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 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.
The prophets generally (including all the Old Testament inspired authors), as "the angels" similarly refer to them in general. This language would imply that this had been a common and common wish of the prophets.
The Old Testament saints saw Messiah only hidden, and as it were absent--absent not in power and grace, but inasmuch as He was not yet manifested in the flesh". 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. A striking testimony to verbal inspiration; the words which the inspired authors wrote are G-d'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.
This word is intensive. It means that they sought out, or study perseveringly 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.
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 men of their own times, and perhaps to themselves, obscures 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 G-d. 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.
The grace of the New Testament: an earnest of "the grace" of perfected "salvation . . . to be brought at the (second) revelation of Messiah." Old Testament believers also possessed the grace of G-d; they were chosen children of G-d, but it was as children in their nonage, so as to be like servants.
Meaning that they inquired in regard to Him, who He would be, what would be His character, and what would be the nature of the work which He would perform. There can be no doubt that they understood that their predictions related to the Messiah; but till it is not improper to suppose that it was with them an interesting inquiry what sort of a person He would be, and what would be the nature of the work which He would perform.
They studied what time or when these things would occur and what signs to watch for. Not to the exact time when these things would occur, but to the character or condition of the age when they would take place; perhaps referring to the state of the world at that period, the preparation to receive the gospel, and the probable manner in which the great message-would be received. Perhaps, however, the inquiry in their minds pertained to the time when the predictions would be fulfilled, as well as to the condition of the world when the event takes place. Isaiah, for example, had given utterance to the sublime predictions which we now have of the Messiah, in his prophecies, he sat himself down with the spirit of a little child, to learn by prayer and study, what was fully implied in the amazing words which the Spirit had taught him to record! How much of mystery might seem still to hang around the subject! And how intent would such a mind be to know what was the full import of those words!
They saw clearly that the Messiah was to suffer; and doubtless this was the common doctrine of the prophets, and the common expectation of the pious part of the Jewish nation. There was much about those sufferings which they wished to learn, as there is much still which we desire to know. Whose sufferings are the price of our "salvation", and who is the channel of "the grace that should come unto you."
It is only because the Son of G-d was to become our Messiah that He manifested Himself and the Father through Him in the Old Testament, and by the Holy Spirit, eternally proceeding from the Father and Himself, spoke in the prophets.
The Hebrews think the greatest sin is not to look forward to the Messiah.
Do you examine the Word as diligently as the prophets?
Do you examine your own prophecies, since you are only the vessel G-d uses, to see how they apply to you?