Sex and the Single Person by John Piper

If the Bible addresses an issue with unrelenting frequency and urgency, and if that issue is one of the strongest natural forces in the world today, then ministers of the Word of God are obligated sooner or later to declare God's will on that issue. The sexual life of the unmarried person is of great concern to God. Even those of you who have not entrusted yourselves to Christ for salvation and do not love God, even you are obligated to obey what God has to say about your sexual desires. Though you rebel against his ownership, you are God's. He made you and has an absolute right to tell you what is good for you. He sent Jesus Christ into the world to overcome your rebellion and to make peace by the blood of his cross. And my prayer at the very outset is that you might turn from your rebellion and unbelief and disobedience, and that you might trust Christ for forgiveness and live for the glory of God.  More...