Why is spiritual life necessary for Christians?

Spiritual life is vital for Christians as it marks the transition from being spiritually dead to alive in Christ, integrating them into the familial relationship with God. Without spiritual life, individuals remain separated from God, unable to understand or respond to the gospel. It’s highlighted in Ephesians 2:4-5, where Paul notes that, 'God, who is rich in mercy, for his great love wherewith he loved us, even when we were dead in sins, hath quickened us together with Christ.' Spiritual life, therefore, not only signifies salvation but also enables one to engage in the good works that God has prepared for them, creating evidence of genuine faith and a transformed heart as they walk in obedience and glorify God.