Christ is the Treasure in the Scriptures

Then he said unto them, O fools, and slow of heart to believe all that the prophets have spoken: Ought not Christ to have suffered these things, and to enter into his glory? And beginning at Moses and all the prophets, he expounded unto them in all the scriptures the things concerning himself.  (Luke 24:25-27)
Look, therefore, always for Christ in the Scripture.  He is the treasure hid in the field, both of the Old and New Testament . . . Have Christ, then, always in view, when you are reading the Word of God, and this, like the star in the east, will guide you to the Messiah, will serve as a key to everything that is obscure, and unlock to you the wisdom and riches of all the mysteries of the kingdom of God.
– George Whitefield