I understand it fine, thanks.
But maybe I missed the part where churches get to decide whether the law is OK to follow or not.
I guess you missed the part about Congress passing no law respecting an establishment of religion, or prohibiting the free exercise thereof.
Catholic Charities is a private, religious, social services organization. Since when should there be a law dictating who they choose to help?
Religious organizations have been exempt from other laws they consider immoral.
People are allowed conscientious objector status for not engaging in combat or serving in the military. How is this any different?