The Greatest Bible Study of All Time
On the road to Emmaus, the Risen Jesus (whom Cleopas and the other disciple don't recognize) explains that the Messiah had to die:
25 He said to them, “How foolish you are, and how slow to believe all that the prophets have spoken! 26 Did not the Messiah have to suffer these things and then enter his glory?” 27 And beginning with Moses and all the Prophets, he explained to them what was said in all the Scriptures concerning himself.
Luke 24:25-27
The greatest Bible study in all of history, and Luke doesn't give us any more details than that!
But, I think what he does give us is important:
Jesus is the key to understanding the entire Bible--it all points and finds fulfillment in him.