The scripture on that view was meant to keep the Jews separate from their Babylonian captors, as were the dietary restrictions, which have since been revoked.  As for original sin, there were no first parents, no Adam and Eve and the whole story of Eden was a myth about blame (not disobedience). The knowledge of Good and Evil is essentially the judgement of others.  It is for God, not humans. Quit blaming homosexuals for their sexuality, which is biologically determined by a phenomenon known as epigenetics.  It does not force those born with it into chastity, just the opposite. The Church can guide homosexuals into stable rather than transitory relationships, same as others, with Marriage.  Castigating them for who they know themselves to be removes them from salvation by alienating them.  Their souls are on your hands.  Enjoy Purgatory.  If you keep on this path, you will be there a long time.