In Ezekiel 18:4, the Bible teaches that all souls belong to God. He sent Jesus to pay the debt for the sin of all mankind. God is not willing that any should perish. He wants all souls to be saved, not just some or a certain group of people.
Retaining Christians is important because the soul never dies. It will enjoy the pleasures of heaven for eternity or suffer the pains and agony of hell forever. The beauty of this fact is, we all get to choose our own destiny.
Jesus said, "Not everyone who says to Me, 'Lord, Lord, ' will enter into the kingdom of heaven, but he that doeth the will of my father in heaven." One must come to Christ and remain faithful unto death.
Retaining New Converts: Let's Think Souls versus Bodies can be used to help set up an "outreach program" for congregations and keep the saved safe. It can also be shared with other church families to enhance the retention of their members and new converts.