The Apostle John was exhorting his audience (believers) to pray for one another especially those who are in sin. Believers have been saved by grace through faith. We are spared of eternal death and separation from God. Yet our salvation does not preclude us from sinning in this world. We must take sins seriously in our lives and in the lives of our brothers and sisters.
Death is unnatural and it brings much sorrow and pain. But Christ reminds us that there is something that is worst than death – His future judgment. Christ’s death affirms the certainty of this judgment as well as provides a way out from this judgment. Our response of faith in Jesus Christ in this world guarantees our hope for heaven in the future.