In Romans 1:18-32 the apostle Paul condemns the practice in the severest terms. Homosexuality is "unclean," "impure," "dishonoring to the body," "vile," "degrading / disgraceful," "contrary to nature," "unseemly/ obscene," "improper activity of a depraved mind," "unrighteous," "wicked," etc. Of particular importance to the apostle in this passage is the fact that homosexuality is "unnatural"--contrary to nature. In other words, nature itself teaches that the practice is wrong; we all know it intuitively. Homosexuality is, then, a particularly rebellious sin.
In 1 Corinthians 6:9-10 the apostle Paul speaks of homosexuals as "effeminate" and "abusers of themselves with mankind" who "shall not inherit the kingdom of God." The terms he uses here seem to be specific references to both active and the passive participants in a homosexual relationship. Such people are "unrighteous," he says, and if they remain in that practice they will be condemned.
From all this we can draw at least the following three conclusions:
1) Homosexuality is contrary to Scripture. There is no way to speak of any kind of acceptable or "Christian" homosexuality. There is never any allowance for it. It is never anything but sinful.
2) Homosexuality is contrary to nature. It is a particularly rebellious sin, a violation even of one's own conscience.
3) Homosexuality is worthy of severe judgment. The Mosaic law prescribed the death penalty for this sin. The apostle Paul specified that such people have excluded themselves from the salvation that is in Christ Jesus and are headed toward condemnation.