1 Peter 1:11 [The prophets] searching what, or what manner of time the Spirit of Christ which was in them did signify when it testified beforehand the sufferings of Christ, and the glory that should follow.
The prophesies were fulfilled in the life, suffering, death, resurrection, and ascension of Christ. The promise has come true: the glory has been revealed. We who believe in Christ share in, and have a part of, the glory of Jesus. ”The glory that follows” has come to us. This is the promise.
The next verse (12) explains this: It was revealed to them that they were serving not themselves but you, in the things that have now been announced to you through those who preached the gospel to you by the Holy Spirit sent from heaven. The Prophets were serving you, the Apostles preached that gospel to you, and, through it, the Spirit brings you to faith and eternal life. Thus, by the preaching of the gospel we all participate in the glory that should follow.
Jesus earned the glory. We get to walk in it.