searching for who or what kind of time the Spirit of Christ, which was in them, pointed to, when he predicted the sufferings of Christ, and the glories that would follow them.
The title "Spirit of Christ" occurs elsewhere in the New Testament only in Romans 8:9. In both places it probably signifies not only that the Spirit came from Christ but also that He witnesses to Christ as His representative (cf. John 15:26-27). Peter was stressing the Spirit’s witness to Christ in the Old Testament rather than the preexistence of Christ. [Note: Davids, p. 62.] 