How do we know that life in Christ is important?

In I Corinthians 15:21-22, it is stated that just as death came through Adam, resurrection and life come through Christ. This underscores the importance of Christ as the source of spiritual life and resurrection. John 11:25 affirms that Jesus is the resurrection and the life; whoever believes in Him, though they were dead in sin, will live. Hence, believers are not only revived spiritually but also receive the assurance of eternal life, which is a fundamental aspect of the Christian faith.