But what if homosexual activity is indeed sinful?
Xian "sins" are defined by the xian text.
It is quite explicit.
Do you, as a xian, get to decide which sins are real and which are gobbledygook?
If not, one must read the bible
literally, yes?
And that's a whole heapin load of sins you gots to watch out for.
You'd best put down that brewski.
Galatians 5:19-21
Now the works of the flesh are manifest, which are these; adultery, fornication, uncleanness, lasciviousness, idolatry, witchcraft, hatred, variance, emulations, wrath, strife, seditions, heresies, envyings, murders, drunkenness, revellings, and such like: of the which I tell you before, as I have also told you in time past, that they which do such things shall not inherit the kingdom of God...