1 Peter 1:11

what--Greek, "In reference to what, or what manner of time." What expresses the time absolutely: what was to be the era of Messiah's coming; what manner of time; what events and features should characterize the time of His coming. The "or" implies that some of the prophets, if they could not as individuals discover the exact time, searched into its characteristic features and events. The Greek for "time" is the season, the epoch, the fit time in God's purposes. Spirit of Christ . . . in them-- (Act 16:7, in oldest manuscripts, "the Spirit of Jesus"; Rev 19:10). So JUSTIN MARTYR says, "Jesus was He who appeared and communed with Moses, Abraham, and the other patriarchs." CLEMENT OF ALEXANDRIA calls Him "the Prophet of prophets, and Lord of all the prophetical spirit." did signify--"did give intimation." of--Greek, "the sufferers (appointed) unto Christ," or foretold in regard to Christ. "Christ," the anointed Mediator, whose sufferings are the price of our "salvation" (Pe1 1:9-10), and who is the channel of "the grace that should come unto you." the glory--Greek, "glories," namely, of His resurrection, of His ascension, of His judgment and coming kingdom, the necessary consequence of the sufferings. that should follow--Greek, "after these (sufferings)," Pe1 3:18-22; Pe1 5:1. Since "the Spirit of Christ" is the Spirit of God, Christ is God.

— Jamieson-Fausset-Brown Commentary (public domain)