Luke 24:27, “And beginning with Moses and all the Prophets, He (Jesus) interpreted to them in all the Scriptures the things concerning Himself.“
There are two dangers for interpreters of Scripture: 1, Getting to Jesus without the proper context. 2, Missing Jesus altogether.
These dangers are directly opposed, yet they are very similar to one another. The whole Bible is about Jesus, however, the message of an Old Testament passage does not simply consist in its fulfillment in Christ.
We certainly want to find out how a passage points us to Jesus, but we don’t want to do so at the cost of the original context. For example, while many find life lessons in the story of David and Goliath, some interpreters completely ignore the plain story to show how Jesus is the greater David. David is indeed pointing to Christ in his work on behalf of Israel, but the big picture context of the passage reminds us that God is using David to keep His covenant with Abraham to give him a seed that would bless the nations. God was preparing His king to reign in Saul’s place.
On the other hand, we must guard against reading the Bible as a Pharisee or a Muslim. They can read the whole Bible and not see Jesus in the clearest of messianic passages. This is more dangerous because it misses Scripture’s picture and rejects God’s ultimate plan in Christ Jesus.
So the Bible is about God’s plan of salvation: His promise to restore His kingdom, and then the fulfillment of that promise through His Son Jesus. And so all the promises of the kingdom of God are fulfilled in Christ.