It's just another hook to get one into the cult.
"Hey, love is pretty grand, right? What if I told you there was an even better version of it? That everything you've experienced with actual people pales in comparison with this ur-love? And that all you have to do is believe in a creator deity that sent himself, in the form of his own son, down to earth to live, and then suffer and die for the sins inherent in our human nature? Who wouldn't do that?"
It's patently ridiculous.
"Hey, love is pretty grand, right? What if I told you there was an even better version of it? That everything you've experienced with actual people pales in comparison with this ur-love? And that all you have to do is believe in a creator deity that sent himself, in the form of his own son, down to earth to live, and then suffer and die for the sins inherent in our human nature? Who wouldn't do that?"
It's patently ridiculous.
"I was thirsty for everything, but blood wasn't my style" - Live, "Voodoo Lady"