Not Found In The Bible

What do you call something not found in the Bible? In any fictional novel you’ll find things that are just made up where as in the Bible things are not made up. One thing is for sure, if something is made up, it will have absolutely nothing to do with one’s salvation. The words “the Son is God” are a prime example. These words are not in the Bible. They have absolutely nothing to do with one’s salvation, and it is safe to just call them, made up. God bless. In His Care… Jim