I'm preaching this Sunday on 2 Thessalonians 1:5-10.
In ESV, v. 9 reads "they will suffer the punishment of eternal destruction, away from the presence of the Lord and from the glory of his might." Most translations follow the same idea.
But "away from" is simply apo in Greek. Apo can mean all sorts of things. It can mean away from in the sense of separation. Indeed BDAG, the main lexicon, gives this sense for 2 Thess 1:9. It can also mean from in the sense of source or origin, thus God is the agent of this destruction. It could even have a causal sense. Apo prosopou might then indicate that it is the presence of God which actually causes the destruction: "from the face of God."
As evangelicals, we're used to saying that Hell or our punishment is to be shut out of God's presence, completely and finally, so losing every good thing of common grace - love, friendship, food, happiness etc.
Yet, Jonathan Edwards suggested some 250 years ago that eternity for both believers and unbelievers will be "in the immediate presence and sight of God." Indeed, it is the presence of God which makes Hell Hell. He is so hated by unbelievers, and his glory and holiness so unbearable, that it is in the presence of God that they find the greatest torment.