Homer the Heretic for sure. The episode ends with Marge being completely validated and Homer being pressured into going back to church. Why should he? To make his wife happy? He clearly doesn't give a damn, and frankly that's his right.
Pro tip: If you try to emotionally blackmail people into following your religion, you're a terrible human being.
What were they thinking when they wrote that? Were they just obsessed with maintaining the status quo? Or do they genuinely feel that Christianity should be forced on those who don't believe in it? Because it wasn't the last time the show would pull that crap - and in every instance, whether it be Bart's Catholicism or Lisa's Buddhism, the intolerance hoisted on Marge's character is never addressed in a meaningful way.
So yeah, Homer the Heretic is pretty awful. Not as bad as when the Muslim family moved in and Homer was written as a racist lunatic, but still God awful.