Well, that’s the rub. Lighting candles or throwing water onto people’s foreheads isn’t Judaism nor Christianity.
I believe that very many people, who claim to be either Jewish or Christian, do not have the fundamental knowledge of their own faith traditions. To be even more specific, they have no clue what the core of their faith tradition teaches.
I’ve been studying academic biblical scholarship for around thirty years, so that is why I can speak to this issue. I could go on and on about this subject matter and I may make some in-depth posts about it in the future.