Concerning this salvation, the prophets sought and searched diligently, who prophesied of the grace that would come to you,
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.