Sexual Orientation is not a Sin
There is a tendency to confuse homosexual tendencies and feelings with acts of homosexual intercourse, because the English word "homosexuality" is often used to describe both.
However, regardless of how we interpret the Bible's teachings about homosexual acts, it is important to note that the Bible does not condemn people for having homosexual tendencies. It is certain actions that are prohibited by Bible teachings, not tendencies or feelings.
A boy or girl who discovers homosexual feelings should realize that, like other interests and feelings, it may be only a passing phase that will fade away in time. Meanwhile, he or she should avoid becoming obsessed with the feelings or indulging in any kind of sexual activity.
A homosexual Christian man or woman is presented with great challenges, and great strength is often achieved by learning to deal with great challenges. Perhaps God has some special mission in mind for that person that is best accomplished outside the restrictions imposed by marriage and family duties.
Avoiding Self-righteousness
Ironically, homosexuality also poses a challenge for heterosexual Christians. We may let feelings of contempt or fear lead us into the sin of self-righteousness. But Jesus and other New Testament leaders taught by word and example not to be self-righteous or discriminate against those we consider to be "sinners" (Matthew 9:10-13, Luke 7:36-48, 18:9-14).
Further, Jesus told us to eliminate the sins in our own lives rather than passing judgment or looking down on others. For if we judge other people harshly, we will, in turn, be judged harshly:
"Do not judge, or you too will be judged. For in the same way you judge others, you will be judged, and with the measure you use, it will be measured to you. (NIV, Matthew 7:1-2)
Christians have a responsibility to correct matters of wrongdoing among themselves (Matthew 18:15-17), but this should always be done fairly and with compassion. We are never to take upon ourselves the task of judgment that belongs to God alone (Hebrews 10:30, Romans 14:10-13, 1 Corinthians 4:5.)
James makes it clear that we must treat others with mercy, not with judgment or partiality (prejudice):
You do well if you really fulfill the royal law according to the scripture, "You shall love your neighbor as yourself." But if you show partiality, you commit sin and are convicted by the law as transgressors. For whoever keeps the whole law but fails in one point has become accountable for all of it. For the one who said, "You shall not commit adultery," also said, "You shall not murder." Now if you do not commit adultery but if you murder, you have become a transgressor of the law. So speak and so act as those who are to be judged by the law of liberty. For judgment will be without mercy to anyone who has shown no mercy; mercy triumphs over judgment. (NRSV, James 2:8-13)
As Christians, we must remember that all of us are sinners in our own ways (Romans 3:21-24, 5:12). Despite that, God loves all His children (Genesis 1:31, Psalms 145:9, Matthew 5:43-45, John 3:16, Romans 5:8). We cannot afford to let our feelings or fears about homosexuality blind us to Jesus' commandment to "Love your neighbor as yourself" (Matthew 22:36-39).
Of course, society has a legitimate right and duty to take legal action against those sexual offenders, homosexual or heterosexual, who use coercion or who prey on children or the disabled.