Going to Church or belonging to an organization does not make one a Christian.
AMEN!!!!
I would add not belonging to a church does not mean one is not a Christian.
Yes but it helps, a lot. It's easy enough to talk yourself into falsehoods even with a solid theology to serve as a framework around which to build your thoughts. Just recently talked with clergy to make sure my thinking hadn't gone astray; hadn't missed something or fallen into one of the many philosophical pitfalls.