How do we know we are spiritually dead in sin?

The concept of spiritual death is rooted in Scripture, specifically highlighted in Romans 5:12, which states that all sinned when Adam sinned, marking humanity's descent into sin and death. Ephesians 2:1 further affirms this by declaring that we were dead in trespasses and sins. This spiritual condition signifies alienation from God and the inability to seek Him on our own. The inherent depravity, born from the fall, underscores the need for grace and regeneration through Christ, affirming that salvation cannot be achieved through human effort but is solely based on God's mercy.