The proof you seek is in the relationship with Christ. Deny that opportunity and you won't have that revelation in your life.
Relationship?! What a joke. Can you see him, smell him, touch him, hear him, etc.? And don't come back with anything less than intelligence with a response.
As another has made reference to, any "warm" feeling or whatever you might have experienced is simply comfort obtained through self-delusion. Believing strongly (through brainwashing) in something because you want to so very badly.
Your relationship is with nothing and no one. Just a weak little voice in your head telling you to believe to dull your pain and fear.
Fool.