I have some understanding of the religious issues you bring up (thankfully not my own, for once). My partner's abusive/alcoholic family was "saved" when he was 15 and his parents became, and still are to this day, devout Christians (I have lately come to see what the so-called most "devout" Christians in his family are like, and it sure does not strike me as how you should behave or treat others, he is the most compassionate one of the bunch of them). He was raised that way and believes in it.
But he has had a lot of struggles, trauma, and tragedy in his life. His "Christian" family's attitude?
Well, the bad things that have happened to him in his life are his own fault, because they made good decisions and he didn't. As a result, that is why bad things happened to him and not to them. They lived right, practiced their religion correctly, made the right choices, and as a result, God blessed them.
That the things happened to him were his fault, are absolute nonsense. His mother's reaction, after this rejection and judgement from his other family members was, "well, if you really want things to change, you will start going to church."
In other words, not only do they think his life is his fault, but God does, too, and is punishing him for it.
I cannot believe the cruelty in that, and they do not see it. Now he is a mixed up mess between questioning his faith in God, his pain at their rejection and lack of recognition of how hard he has worked to be a better person, and wondering if it really is all his fault, because he wasn't a good enough Christian.
He prays every day, and he is a good person, and helps others. He lives his life that way, the only thing he does not do is go to church. Yet he feels like a failure.
Now he is afraid TO go to church, because, even if he wanted to, if things get better, it means it was his fault, and if it doesn't he has to question his faith entirely. Either way it shakes him down to his very foundation.
THIS is what people use religion to do to their children? It's a double bind, the choices he made, such as to have his children, and as many as he had, were because "birth control is a sin", and he and his wife were trying to do the Christian thing. 2 of the 5 living children have autism and one died at birth from severe spina bifida. So because of that, it is all his fault whatever the consequences of that were. But if he & she had chosen to use birth control, or his wife have an abortion, well his parents would have had a stroke. You just can't win.
My feeling on this is, if you are going to believe in God, believe in a loving and compassionate one. Because frankly, if there is one there, and he/she/it is punitive and hateful, and has no capacity for love and mercy, all of us humans are screwed anyway and hell is going to be one overpopulated place. It really will not matter whether we have gone to church (or whatever), if trying to be a good person and live a good life to the best of our ability is not enough. And I can't imagine how going TO church, but being heartless and judgemental and hurtful in life, is going to get you into the pearly gates, and if it does, do I really want to be there?
So I understand how you and your brother can be struggling as a result of this. I think doing this to kids is despicable and cruel.