Since you sin unconsciously anyway it is ok to Steal? It does not matter. This was my sons response when when I said in his religion it is called a sin. He stole from his sister and did not want to give it back. I see my kids every two weeks and can only teach them during that time. If what my son said is what they teach in his church I will go there and have a good chat. It this is what they teach I can understand why there are so much religious people in prison and the number of atheist are so low in comparison. It does not matter anyway since you already sin without knowing? Morals come from society, empathy etc. If you don't follow the law the society you live in will correct you. If you follow an other religious law you might get into trouble and don't even learn from or respect the sentence . I tried to talk to my son. He is in full puberty. He said it is his opinion and he doesn't want to discuss it. I hope I was not like that at 16. The issue is resolved though.
Well sin isn't a concept I can relate to.
However, stealing is against the law. My opinion is that if people feel free to break the law, then they shouldn't hide behibd the law when the person they stole from wants retribution. Example, if society collapsed, and there was no law, and someone attempted to break into my house, they would be ended.
Even without knowing exactly what church you're talking about, I would be skeptical that your son properly understood whatever was taught to him. Religion is guilty of a lot of manipulative teachings, but that's not one of them that I've ever heard of. If I had to hazard a guess it would be that your son is pulling a fast one on you, in the time-honored tradition of gaslighting asshat teens everywhere and everywhen. Most likely, this, too, shall pass.
If you have a decent co-parenting relationship with his mother, this is one of those cases where communicating about the matter should be helpful so that you can reinforce each other's (hopefully shared) values.
Quite apart from all that, in your house it's your rules, regardless of what the rules are at his mother's or at his church.
You are right that it could be a fast one. I thought about this too. He is having more weird thoughts lately that might be related to his age. Regrettably I cannot communicate to his mother. She became a fanatic and that is basically the reason why we split up. The reaction would be furious and he will be in too much trouble for what he said.
I would avoid using his religious teaching against him. He will only be more resisrant, and you will never win that battle. Instead, try to find some humanistic or secular expressions of why stealing is wrong. Leave god out of it. Our civilization depends on it.
"Sin"...how about just the Golden Rule and dump all that stupid guilt......