'Church Speak'

I have always sought to address the people, as a minister. Yet, twenty years ago, I still used a lot of 'Church speak' from the pulpit: Biblical and theological terms which one would not usually find in everyday language. Recently I realised how far I have left that behind, when a preacher used such terms as 'theology' and 'Pharisee'. Today I would not use such 'obscure' terminology without explanation, unless I were sure it would be understood. OBSERVATION: This is all the more important in a Church which accommodates people of different socio-economic backgrounds. The gospel has to be 'friendly' to the people -- while not compromising content. I think this is not optional.