Here is the response I gave to a friend of mine who heard a preacher say that there are those who can be born homosexual:

Yes, homosexuality is a sin like any other and maybe nature’s corruption could be understood in a way that we all have the capacity for and are born killers, rapists, sodomizers, adulterers, idolators, sorcerers, etc. if left to our own devices. Our natural tendencies give license to all kinds of evil. But to say we were born all of the above can not stand in the face of prevenient grace and the learned behavior and development of condemning sin (the soul that sins will die- Ezek. 18:20). I don’t believe there will ever be evidence of a homosexual gene, but I believe there is an age when in the course of the development of a young person, he/she decides their sexual identity and it is determined by a number of mitigating factors. It is most generally the result of a time of abuse, but undoubtedly the product of a condition of a world governed by the principality and power of the air; the prince whose kingdom is temporary yet influential over this world. On this subject, we can not deny the chemistry of some who are born with an hormonal imbalance. As far as lower and higher testosterone/estrogen, this is a fact and many who are born that way have historically been relegated to be artists, eccentrics, etc., if you follow me. In our society, these seem most apt to be victims of sexual confusion as they struggle themselves with this imbalance. It is a weakness, as any has a weakness exploitable by Satan. Evidence exists that these with an imbalance (not inherent as genetical) were identified and were found suitable for functions as eunuchs throughout history. Remember Matt. 19:12 (NIV) “For there are eunuchs who were born that way, and there are eunuchs who have been made eunuchs by others–and there are those who choose to live like eunuchs for the sake of the kingdom of heaven. The one who can accept this should accept it.” Hope this helps brother.