Please help

[Unregistered]

our sermon this week is titled. Life on the Seven "C's". Is this the correct way of writing it? Each of us have a different opinion.

 

[Hi_there_Carl]

Assuming you mean sea then the correct way to write it is: Life on the seven seas. ;-)

 

[Anglika]

If you are meaning the full sentence, you have options:

Our sermon this week is titled: Life on the Seven "C's".

Our sermon this week is titled "Life on the Seven 'C's' ".