Why is it important for Christians to understand the reality of spiritual death?

The doctrine of spiritual death underscores the Reformed perspective that all humanity is born dead in trespasses and sins (Ephesians 2). Recognizing this truth is vital because it dismantles any notions of works-based salvation, emphasizing our utter dependence on God's grace. As Romans 5:12 explains, death spread to all because of sin, illustrating our dire situation without Christ. Furthermore, John 6:40 reassures believers of the promise of eternal life to those who see and believe in Him, making clear that true life begins with faith in Christ, who alone resurrects the spiritually dead into eternal life.