Why is it important for Christians to believe in Jesus as the source of life?

The belief in Jesus as the life-giver is foundational to the Christian faith. He claims in John 11:25, 'I am the resurrection and the life: he that believeth in me, though he were dead, yet shall he live.' This illustrates that faith in Christ not only assures us of physical resurrection but also grants us spiritual life that endures forever. Hence, understanding Him as the source of life emphasizes the necessity of faith for salvation, as eternal life is granted through knowing Him (John 17:3). Believers are called to rest in this promise of life found solely in Jesus.