It's telling that Kim Davis chose those words to defend herself last week. Ms. Davis, the clerk of Rowan County, a rural, impoverished and previously obscure patch of northeastern Kentucky, made international headlines for her refusal to issue marriage licenses to same-sex couples. She had, should it need saying, not a legal leg to stand on, the Supreme Court having ruled in June that states may not bar such couples from marrying. On Thursday, Ms. Davis was jailed for contempt. The thrice-divorced clerk had said she was acting upon "God's authority" and fighting for "religious liberty."