I found your comments on religious statements should have more brief and to the point. I agree that there is no place in an interview to make such statements. However your paragraph on the subject may also offend people, and it seemed more like and attack then advice. 

I do agree that practicing your answers out load is a very good idea. Hear it, do it.

Cursing is never a good idea in an interview, or in business for that mater. If you are comfortable doing it while while working with your team you may just say it in front  of a client or customer and that is not expectable.

Always take the high road any you will have a lot less to apologize for.