How do we know Christ is the central theme of the Bible?

Throughout the Scriptures, Christ's role as Redeemer is prophesied, hinted at, and ultimately revealed in His life, death, and resurrection. The Bible emphasizes that all fullness dwells in Him, and the glory of God is displayed through Christ as the center of salvation history. Affirmations by Jesus and apostolic teachings expressly point to Him being the object of the Scriptures' declaration. If one overlooks this truth, they fail to grasp the scriptural purpose and the grace provided therein.