Most traditional ET's will intentionally walk in darkness unless the Lord illuminates the truth for them as He had done for me a few years back.
Here is one Scripture I use to get them to at least think though:
In Revelation Jesus is talking to the seven church's. To each He gives encouragement and admonishment. He also says "he who overcomes" and then shares a particular reward. Remember, He is talking to the Church's, so the ones He calls "overcomers" are specifically called out from the Church.
Sooo... in Revelation 2:11 Jesus says "He who has an ear, let him hear what the Spirit says to the churches, He who overcomes shall not be hurt by the second death." Notice, He did not say they would not enter the second death, only they would not be "hurt" by it.
What is the "second death"? It is the Lake of Fire of course! (Revelation 20:14, and Revelation 21:8)
The second death, is simply death to death. We are already in death now in this life. When we are saved, we enter into Christ's life. We are born out of death into Life. Those who do not claim His Life in this life, will enter the second death, to die to death. It is God's purifying fire.
Notice the Church is not exempt from the "second death" or Lake of Fire. Even the elect will enter into God's all consuming fire, yet they will not be "hurt" or "injured" for they have already been purified and purged of any carnal nature.
One other Scripture I have recently been studying is Isaiah 33:14,14 "Sinners in Zion are terrified; Trembling has seized the godless. Who among us can live with the consuming fire" Who among us can live with continual burning? (The answer in verse 15) "He who walks righteously and speaks with sincerity, He who rejects unjust gain, and shakes his hands so that they hold no bribe; He who stops his ears from hearing about bloodshed, and shuts his eyes from looking upon evil".
Notice, the question is "who can live with the consuming fire", or KJV I believe says "who can dwell in the consuming fire?" It does not say the righteous will be outside of the fire. Indeed we will be in the presence of God where no carnal or fleshy thing will stand. This is the Lake of Fire.