Why is it important to believe only in Christ?

The importance of believing only in Christ lies in the distinction between grace and works. In Mark 5:36, Jesus instructs Jairus to 'only believe,' which highlights that faith must be singularly focused on Him without any additions of human effort. This 'only' differentiates between true saving faith and the counterfeit faith that relies on works or self-righteousness. It is imperative for Christians to realize that all that is needed for salvation is found in Christ alone. When one adds anything to this belief—such as personal merit or religious rituals—they diminish the grace of God and potentially nullify His saving work. Understanding that Christ is all in salvation ensures that believers rest fully in His accomplished work rather than their own efforts, resulting in a relationship that is grounded in grace instead of law.