And Plural marriage will instantly follow. After that the age of consent will be lowered to 12.
The fascist Left will pressure the Church to accept, even facilitate these abominations. Some Church leaders will resist. Others will go along so as not to be "confrontational". Some will say "Bravo!"
Heck, I think all churches should immediately start working on that: "We're all the Bride of Christ, so we're all married, and you're discriminating against our religion if you disagree!"
That aside, just wait for the divorce statistics. They should be a source of great fun as well.