We live in a church age of such profound apostasy that a large segment of evangelicalism is unable to biblically explain what it is to be a Christian. This is largely due to a wholesale neglect of the doctrine of regeneration-that supernatural impartation of spiritual life to the spiritually dead that causes individuals to savingly believe on the Lord Jesus Christ and so radically transforms their natures that the very desires of their hearts and acts of their wills reflect the nature of God who has made them new creatures in Christ. This is the subject of this little book.