[Iscool]

Sometimes, theologians talk like theologians. There is a precision needed that sometimes requires an uncommon word. And while Jesus may not have used such a word, many rejected what he taught because it was incomprehensible to them.

I doubt the words were incomprehensible, perhaps the ideas were incomprehensible...

[kosciusko51]

And that is why theologians talk like theologians. They use words that capture complex theological ideas in what amounts to a theological shorthand.