The attorneys might be friendly and make it sound as if they're asking your opinion on certain matters. (realtormag.realtor.org)
You can also create legally enforceable agreements on certain matters, but it is important to get legal advice on this. (sortingoutseparation.org.uk)
Personally with the word «belief» in my opinion that is just your thought on a certain matter, even if it is not about religion. (religion.blogs.cnn.com)