As for me I am just a plain christian working out my salvation in fear and trembling and trusting completely in the mercy of Jesus to save my sinful soul
No space cadets, no denying divinity of Jesus ,no agnostic bents, no New Age Mumbo Jumbo
Trust in Jesus and become one of us Christians who worship Jesus instead of something or someone else.
So I guess until you accept Jesus as your personal savior your associates should refrain from addressing you as a brother in Christ as not to appear mendacious.
Trust in Jesus for He is the answer