Specifically it seems to address a tendency on the part of people who identify as religious to use their religion to justify their own opinions and actions - in extreme cases, "It's what God would want" (meaning "It's what I want") or "The Bible/Torah/Koran says so" (meaning "That's how I interpret it").
I'm not saying for definite one way or the other, but it does seem like a very pointed swipe at an ex-partner who used religion to try to get their own way.
Specifically it seems to address a tendency on the part of people who identify as religious to use their religion to justify their own opinions and actions - in extreme cases, "It's what God would want" (meaning "It's what I want") or "The Bible/Torah/Koran says so" (meaning "That's how I interpret it").
I'm not saying for definite one way or the other, but it does seem like a very pointed swipe at an ex-partner who used religion to try to get their own way.