Instead of answering some went on a verbal shooting spree. If I rejected your answer it is because it wasn't an acceptable answer.
You state your "criteria" for believing are things people can see and detect yet you leave out those things that people everywhere and at all times have accepted
Like what? Appealing to numbers or antiquity, or what have you is no proof that something exists. More than one billion Muslims believe the Koran is true, and have since the 7th century. And all the Jews in the world deny the New Testament base don their faith which is much older than Christianity. What does that prove?
It is something which no medical tests have ever or could ever "detect", yet no sane person would aver that this "something" isn't real.
Really? So, then you are saying only "insane" people will doubt that this imaginary "something" is real?
I think you are probably tickled to death at every opportunity we give you to twist words, but I was speaking of the concept that we have what is called a soul or spirit a "life force" or whatever you want to call it and it is what makes us us. It is gone at death. It is what I referred to as existing but is not something which can be seen, or proved, for that matter. It just IS. You boldly claim you only believe in what you can see or detect but I think you would agree that you cannot see your own soul and yet you believe you have one.
To take my example further, you cannot touch or see emotions such as love or joy, hate or anger, but you surely can admit that they are real and are experienced by the human species pretty much identically from person to person. That was kinda my point. We all exercise faith of some kind every moment of our lives. Some don't like to call it that, but it is, nonetheless.