An updated and expanded edition of a classic work on the Christian meaning of human sexuality by an acclaimed teacher and priest. The unique gift of human sexuality allows us to choose, or not to choose, to participate in one form of God's creation. This book presents the understanding of human sexuality that divine revelation offers us. It is intended primarily for Christian adults who wish to know what kinds of sexual behavior are right or wrong, and to gain true insight into why such behavior is right or wrong for those who seek to love and live in Christ. For sexual morality is part of the mystery of our life in Christ and makes full sense only when seen as such.