Why is belief in Jesus Christ considered a godly mystery?

Belief in Jesus Christ is termed a godly mystery because it reveals the profound nature of salvation, which is not merely about acknowledging facts but involves a personal and deep-seated faith in Christ. This mystery is that God, from the foundation of the world, decreed that sinners would be justified by faith in His Son. When a person comes to faith, they experience a significant inner change, understanding that it is not their effort that saves but Christ's finished work on the cross. This belief is rooted in God's action, where He draws the elect to Himself, creating a relationship that surpasses human understanding. The mystery encapsulates the beautiful truth that despite the believer's sinfulness, they can be accepted by God through faith in Christ.