Evolution proves that Adam and Eve were born long after the first parents in the Kalahari dessert and that there is no evidence of some early act of disobedience and promised covenant. Original Sin is about blame, not defiance. You can see it in the myth. Eve gave it to me and I ate it. The serpent said we would be like gods? (Serpents don’t talk, that should be a clue it is mythology). The serpent essentially had Eve blame God for not giving them knowledge of sins. Blame is the knowledge of sins. The sacrifice of the Cross is about ending blame, not an act of obedience. It is about Jesus feeling our hopelessness (God is never hopeless otherwise). Quit listening to people who want your obedience because of course they will push a salvation story about obeying.