However, you posted nothing from the Catholic church saying that sodomy was a sin, if done.
tradition has always declared that "homosexual acts are intrinsically disordered."142 They are contrary to the natural law. They close the sexual act to the gift of life. They do not proceed from a genuine affective and sexual complementarity. Under no circumstances can they be approved.
Anything "contrary to the natural law" is objectively a sin, by definition.
The catechism uses the technical term "disordered" rather than "sin" because they're talking about acts in objective terms. When an individual freely and willfully does a "disordered act", that's sin.
There you go. "Sin" consists in willingly engaging in an evil act, with the knowledge that it is evil. Homosexual acts are "intrinsically disordered ... contrary to the natural law" ..." That covers the "evil act" part. The Catechism is written to a Catholic audience, and should be interpreted from a Catholic POV. An action may be evil, disordered, even sinful ... but a specific instance of that action isn't an actual sin, unless the person who does it knows it's wrong and does it anyway. Lack of knowledge, and lack of consent may be mitigating factors in actual guilt.
You can't be serious.
The posting was very clear.
Look, EVERYONE is called to chastity. Chastity means sexual relations between a man and a woman who are married is licit.
Sexual relations between anyone else would not be chaste and would, therefore, be a serious sin.
This includes an unmarried woman with an unmarried man, a married woman with an unmarried man, a married man with an unmarried woman, a married man with a married woman if they were not married to each other, a woman with a woman, a man with a man, a woman with a child, a man with a child, a woman with a beast, a man with a beast, a woman with herself, a man with himself, and you with your computer screen.
Jeesh, could the excerpt from the catechism be any more clear?