Originally Posted by
Coldfrye
Hebrews 6:4-6, "For it is impossible for those who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the Holy Ghost,
And have tasted the good word of God, and the powers of the world to come,
If they shall fall away, to renew them again unto repentance; seeing they crucify to themselves the Son of God afresh, and put him to an open shame."
Once one is Biblically saved the Holy Ghost seals them and indwells them and they are sons/daughters of God forever after.
Scripture has examples of those who appeared to be saved, acted saved and may have even thought they were saved, but their turning away was due to the fact they were never saved to begin with. None lost their salvation because they had never been saved to begin with.
Better explanation of what I have been saying earlier!