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March 2007

Although human sexuality is God’s design and gift, since the Fall men and women have often found it hard to embrace this wonderful gift as God originally intended. However, just because something is difficult doesn’t mean it is impossible.

C.S. Lewis recognized the difficulty of sexual purity in thought and deed, and gave helpful guidance to those who truly desire a chaste life.

…many people are deterred from seriously attempting Christian chastity because they think (before trying) that it is impossible. But when a thing has to be attempted, one must never think about possibility or impossibility. Faced with an optional question in an examination paper, one considers whether one can do it or not: faced with a compulsory question, one must do the best one can. You may get some marks for a very imperfect answer: you will certainly get none for leaving the question alone. Not only in examinations but in war, in mountain climbing, in learning to skate, or swim, or ride a bicycle, even in fastening a stiff collar with cold fingers, people quite often do what seemed impossible before they did it. It is wonderful what you can do when you have to.

We may, indeed, be sure that perfect chastity—like perfect charity—will not be attained by any merely human efforts. You must ask for God’s help. Even when you have done so, it may seem to you for a long time that no help, or less help than you need, is being given. Never mind. After each failure, ask forgiveness, pick yourself up, and try again. Very often what God first helps us towards is not the virtue itself but just this power of always trying again. For however important chastity (or courage, or truthfulness, or any other virtue) may be, this process trains us in habits of the soul which are more important still. It cures our illusions about ourselves and teaches us to depend on God. We learn, on the one hand, that we cannot trust ourselves even in our best moments, and, on the other, that we need not despair even in our worst, for our failures are forgiven. The only fatal thing is to sit down content with anything less than perfection.1

It is a principle of life that what you feed grows and what you starve dies. God calls us to starve impure sexual thoughts and actions by refusing to yield our minds and bodies to them. As we engage in such serious moral effort, we become aware of how weak we really are. Yet, when we make that effort in dependence upon the Holy Spirit, we discover a new strength, not of ourselves, that makes possible what was previously impossible. Such action feeds and strengthens our new nature, leading over time to transformation of heart.

“…if by the Spirit you are putting to death the deeds of the body, you will live.”
ROMANS 8:13 (NASB)


1 C.S. Lewis, Mere Christianity (New York: Simon and Schuster, Touchstone Edition, 1996), p. 94.

COPYRIGHT: This publication is published by C.S. Lewis Institute; 8001 Braddock Road, Suite 301; Springfield, VA 22151. Portions of the publication may be reproduced for noncommercial, local church or ministry use without prior permission. Electronic copies of the PDF files may be duplicated and transmitted via e-mail for personal and church use. Articles may not be modified without prior written permission of the Institute. For questions, contact the Institute: 703.914.5602 or email us.

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