1:11 Searching what... the Spirit of Christ which was in them did signify. 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 beforehand the sufferings of Christ. They spoke of the sufferings of Christ but could not understand these predictions any better than the Jews of Christ's time. See Lu 24:25,26.
1:11 Searching what time - What particular period. And what manner of time - By what marks to be distinguished. The glories that were to follow - His sufferings; namely, the glory of his resurrection, ascension, exaltation, and the effusion of his Spirit; the glory of the last judgment, and of his eternal kingdom; and also the glories of his grace in the hearts and lives of Christians.
1:10-12 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.