Do our beliefs influence our language use?

Our beliefs have a large influence on the language we use. At the Christmas Eve dinner i had with a lot of my family this was evident. We were all talking normally and every once in a while someone would swear during a story by accident, and a lot of the time a family member would say something similar to "not in front of the little ones". This is because most of use believe that the language we normally use should directly change because of the presence of children. Another example of this is most including myself believe that one should talk very different to a coworker or teacher than to a friend. When I talk to a friend i might say "Hey whats up man, how was your weekend". But if i said that to a teacher, they might lose a bit of respect for me. This is because our community believes that language should change depending on the situation a person is in.