One priest in the old church had said that to know your religion, you should also know other religions. But his advice is never to compare because you would only get confused. Now I wonder why that priest had advised of getting to know other religion but cautioned that we can get confused. Maybe what he meant was to be strong with our faith in what religion we are in. Or maybe it is a guideline against the other religions whose members are radically getting recruits and converts that they never stop on smearing other religions.