You bring up a frightening point.I have wondered, what if someone grew up in a totally atheistic environment, without any knowledge of Jesus, the scriptures, or the church.And they got hold of a Bible, and while they were reading the new testament, their heart was opened, and they called on Jesus to save them.At that point, many of us have heard of a number of cases like that.But after this, the person begins to read, reread, and re-reread the scriptures.With only the scriptures and the Holy Ghost, what kinds of doctrines would they come to believe?Without a third party influencing them, would they avoid deception?Or would the devil still find a way to deceive them?