Notice John says Christ is the Propitiation that is satisfaction for our sin. Not for ours only but for the whole world. Then Paul states God is not imputing the trespass of the world, but reconciling the world unto Himself. Therefore what sends a person to the Lake of Fire? The Propitiation of appeasement of God for all mankind has occurred by the blood of Christ. Their trespasses are not imputed that is counted against them so what causes them to end up in the Lake of Fire? Jesus said it is unbelief. The Revelation of Jesus Christ chapter 20 again Those not written in the book of life. We see this book in two other places in Revelation. Then those who will be in the New Jerusalem are seen in So how does one have their name entered into the Lamb's book of Life? By Faith in the savior which is accepting His Propitiatory payment for them, to reject is to be separated from God forever that is the Second Death.