Maybe 20 years ago a Christian theologian (maybe Tom Driver?) said that the most rapidly growing religion in the world was not Christianity, not Islam, not any of the old and mainline religions.

The fastest growing religion is belief in the saving or redemptive power of violence. I believe this is true. Much of what claims to be hard right Christianity is no more Christian than Donald Trump is Republican. It's just a place to hang their hats. The true belief in many who call themselves Christians, Jews, or Muslims is that violence sets things right in the world. Part of the legacy of the 20th Century, perhaps.

By the way, I'd suggest the children's book "Three Tall Trees" by Prince Edward Islander David Weale, if you can find it.