How do we know that spiritual life comes from Christ?

John 1:4 states, 'In Him was life, and that life was the light of men.' This verse underlines that all spiritual life originates from Christ. He provides not only natural life but also spiritual life to those who are born again. Without His intervention, man remains in darkness and is incapable of believing in Him. The sermon illustrates that the elect receive spiritual comprehension through the life that Christ grants, making faith in Him possible. Thus, acknowledging Christ as the source of both natural and spiritual life is fundamental to understanding salvation within sovereign grace theology.