"For God so loved the world that He gave His one and only Son, that whoever believes in Him shall not perish but have eternal life."
In the Bible, man is born in sin. No Christian is without sin, regardless of how devoted or good-natured they may be. To sin is to be human. Yet it is sin that separates man from Godliness, and when we depart our earthly vessel it is sin that results in death. This death is not just physical, but also spiritual. Death in a spiritual sense is to be separated from God because of sin.
In John 3:16, John explains that our sinful nature does not dissuade God of love – instead, God demonstrates the depth of love for his flock by sending his own son into the world to live and die amongst us. Christ’s life was goodly and pure, exemplifying how to live with grace and mercy. When Christ died on the cross, his perfect life was made a sacrifice, and he died a spiritual death for our sins so we may be spared such a fate ourselves, and instead be able to develop deep, meaningful relationships with God.