Anytime you can teach religion out of a textbook to a cl***room of students ,you are basically teaching a dead religion.

The Christian Faith cannot be taught as it were out of a manual.

The Gospel message can only do one thing and that is to inspire the reader.

And the Gospel message of salvation can only be received by way of inspiration of the life and burial and death of the founder of the Christian Faith.

First believe from the inspiration and the doctrines will follow.

If reading the Gospel narratives doesn't impress you then no amount of sunday school will ever be of any use.