All have sinned and fallen short of God’s standard. And the wages of Sin is Death. ~The Bible (Romans 3:23, Romans 6:23)
Death is a strong if not, a sure certainty to the reality of God. If there is no God, no absolute moral law, then death is not logical. if Death is a certainty, all men will die one day, then it is also logical that God will provide a way out, and better yet, He provided that solution by crucifying His own Son.