Thou shalt not lie with mankind, as with womankind: it is abomination. (Leviticus 18:22)
The notion that people are “born gay” is based on a flawed and biased study done in 1991 by researcher, Simon LeVay.
LeVay’s study also had numerous technical problems. For instance, his samples included 19 brains of gays who died of AIDS and 16 brains from men whose sexual orientation was unknown. He assumed the 16 were heterosexual, even though 5 had died of AIDS. More importantly, although LeVay argued that a small INAH3 “caused” homosexuality, some of the gays had an INAH3 that was larger than the average size of the INAH3 of the “heterosexuals,” and some of the “heterosexuals” had an INAH3 that was smaller than those of gays. So some of his gays “should” have been heterosexual and vice-versa.
INAH-3 is the short form for the third interstitial nucleus of the anterior hypothalamus, and is the sexually dimorphic nucleus of humans. The INAH-3 is significantly larger in males than in females regardless of age and larger in heterosexual males than in homosexual males and heterosexual females. Homologues of the INAH-3 have been observed taking a direct role in sexual behavior in rhesus monkeys, sheep, and rats.
LeVay himself was a practicing homosexual, hence the bias in the study. The study’s findings were inconclusive and would be otherwise considered unscientific in its methods, but because some the homosexual men’s brains displayed this “abnormality,” the study was published as proof that gay men are born that way. However, Johns Hopkins recently came out with an article showing that there is no evidence for this claim.
Aside from the science, the Bible rejects the notion of people “born gay.” God does not create a person to naturally do what He has denounced as an “abomination” (Leviticus 18:22; 20:13; Romans 1:26-27; 1 Corinthians 6:9; Ephesians 5:3-5; Colossians 3:5; Jude 1:7, et al.). No one can accuse God of making him/her that way (James 1:13-14). Homosexuality and all other forms of sexual perversions (sex outside of marriage, adultery, incest, etc.) is sin. Humans are sinners by choice, not by God’s design (Genesis 3), and because there is always a choice, God always provides a way out (1 Corinthians 10:13). People sin willingly, and homosexuality is no different from any other sin.
Discrimination against homosexuals is no different from discrimination against people based on their ethnicity. Looking at it biblically, all people are created equal before God (Acts 17:26). Homosexuality is an act and a choice (like any other sin). A person’s ethnicity is not a choice, but no matter what the ethnicity, all people are “born” sinners. There is nothing wrong with associating with homosexuals. In fact, as Christians, we should show them the same love and respect that we show anyone else. However, that does not mean that God or we approve of their lifestyle, nor should we withhold the truth from them when challenged about their sinful lifestyle. We must share the truth “in love” even though the pill may be hard to swallow.
The truth is that we are all sinners in need of the Savior. If you do not know the Savior, see my page on “Securing Eternal Life.”
 LeVay S A difference in hypothalamic structure between heterosexual and homosexual men. Science 1991;253:1034-1037
 Dr. Paul Cameron, “Born What Way?” http://www.familyresearchinst.org/2009/02/born-what-way/
 INAH 3 https://en.wikipedia.org/wiki/INAH_3
 Tyler O’Neil, “Johns Hopkins Research: No Evidence People Are Born Gay or Transgender,” https://pjmedia.com/trending/2016/08/23/johns-hopkins-research-no-evidence-people-are-born-gay-or-transgender/