The biblical position on homosexuality is rooted in Genesis 1-3; this is where foundational principles for religion and relationships are laid out. God’s designed order for human sexuality is heterosexual monogamy. Male and female are equally called to serve God, love each other, and to develop and cultivate the good earth (Genesis 1-2). But through the fall, humans are alienated from God, from themselves, from each other, and from nature (Genesis 3). It is because of the fall that homosexuality exists; it has no root in creation. The Hebrew theocracy required the death penalty for those convicted of homosexual behavior (and for many other crimes as well). In the New Covenant, the civil laws of Israel are transcended, yet Paul teaches that homosexual activities are the result of sin and rebellion against God (Romans 1:18-32), and warns that those who persist in such activity will not inherit the Kingdom of God (1 Corinthians 6:9). Thus, the theological categories are clear cut. The Bible gives no positive examples of homosexual activity. Rather, homosexual activity is something to repent of, and repentance cannot be subtracted from the Gospel (Matthew 4:17).
Because of the redemptive work of Jesus Christ, any sinner can be justified and forgiven through the atonement of Jesus Christ. (While Jesus did not directly speak about homosexuality [he did not need to, since no loyal Jew would defend it], he did ratify the Genesis pattern of marriage in Matthew 19:1-4.) All guilt, homosexual or otherwise, can be taken away through Christ’s finished work on the Cross. As Francis Schaeffer taught in True Spirituality, the justified person can hope to experience “substantial healing” through sanctification. This includes the dimension of sexual sin. Some homosexuals have experienced total deliverance from this orientation through God’s healing; others experience more gradual restoration. But in a fallen world, some regenerate people will not find themselves restored to a heterosexual set of desires. In that case, the Christ-follower must submit himself or herself to a life of celibacy for the sake of conscience and in obedience to God and his Word.
While these moral guidelines are clear cut, they do not warrant hatred or bitterness to those affected by homosexuality. The gospel goes out to all sinners, homosexual or otherwise (Acts 17:30). Yet we cannot twist the Scriptures (2 Peter 3:16) to make them endorse homosexuality or same-sex marriage. Christians, in the power of the Holy Spirit, should show compassion toward homosexuals, but this does not include supporting same-sex marriage, which is a violation of the most basic institution ordained by God at creation: heterosexual marriage. Further, in our pluralistic and largely post-Christian culture, the case for heterosexual monogamy can appeal to natural law (Romans 1:24-23; 2:14-15) as well as to special revelation, since heterosexual monogamy is deeply rooted in human nature, as Robert George and others have argued. But if relativism prevails in our culture, even this appeal will become increasingly difficult to make.