Our verse (2 Peter 2:4) contains several words or phrases that are translated differently in modern translations. In order to consider our options, we need to spend some time looking at how these words or phrases are used.4 For if God did not spare the angels who sinned, but held them captive in Tartarus with chains of darkness and handed them over to be kept for judgment, (LEB)
First, lets look at Jude 6 which expresses a similar or the same thought.
Putting the two expressions together, the angels seem to have abandoned their realm and went where God did not want them to go.6 And the angels who did not keep to their own domain but deserted their proper dwelling place, he has kept in eternal bonds under deep gloom for the judgment of the great day, (LEB)
Rather than spare the trespassing angels, God held them captive in Tartarus. Or, as per other translations, God cast them down to “Hell;” or cast them down into Tartarus,. The grammar seems to use “Tartarus” like we use “jail.” When you put someone in jail, you can use the expression “jailing” and in this case the place is turned into a verb “tartarusing.” Thus the idea is God is confining the angels. Not all, but many commentaries say Tartarus is the lower or lowest pit or cave in Hades. Clearly not a good place to be held.
Now we come to the focus of this study, the chains of darkness. When just a young fellow, we visited Crystal Cave in Sequoia National Park. At one point the guide told us to turn off our flashlights, and then he turned off the cave lighting. It got dark. Absolutely dark. All the muttering stopped. All the movement of the group stopped. We were in a cave of darkness, a pit of darkness, and in chains of darkness. The complete absence of light physically restrains us. But is that the whole idea here? I think not.
Many times the Bible contrasts light with darkness, with light being a feature of God’s realm, and darkness being a feature of being outside of God’s realm. Light and darkness is also used to compare knowledge, with God enlightening us, and without that light, we are in darkness. When we embrace the truth, we are, as the saying goes, walking toward the light. And when we hide from the light, we are scampering toward eternal loss. Loss of rewards, if we are saved, and of course the lost face eternal punishment.
As aliens in our dark world, we need to stick to truth, as our guiding light, and not filter it with the inventions of men..