When I was studying I went to an assembly and outside there was a scruffy looking man with a bike, he was shouting something and he tried to talk to me but the old bag that I was studying with dragged my arm to get me away from him.
She told me he was an apostate and that I should never speak to them because they are working with the devil and want to stumble young ones like myself.
The whole experience gave me the creeps (I was only 16) and even now the word 'apostate' has creepy connotations for me.