I am sure the hon. Lady will know that the Book of Common Prayer says that one of the three reasons in Christian conscience for marriage to be ordained is
“for the mutual society, help, and comfort, that the one ought to have of the other, both in prosperity and adversity.”
Why, in Christian conscience, should the state ban Christians—or, for that matter, people in ordinary society—who want to be able to share that from doing so, just because of their gender?