What about someone who leaves Christianity for Judaism? Wouldn’t that “un-do” a baptism?
I’m not trying to be a smarty-pants. What would the view on that be,at least from a Catholic perspective?
I think they would still be baptized. The Jewish faith had a baptism of repentance. I don’t see that the Catholic Baptism conflicts with that — in fact, I believe it goes farther than just repentance.