[TheRealThing]

Wow, I didn't know he appointed you the authority on whether one could go from believer to non believer, or not.

I'm sorry. Did the scripture I posted seem vague or too far over your head? Think about it for a second. John said if they had been of us they would have no doubt continued but, their leaving, exposed the fact that they were not actually saved and therefore demonstrably not "of them". I don't know of a single example in scripture of a man going from believer to nonbeliever. New Testament believers are sealed by the Holy Spirit at the time of their conversion.