I agree, the end time deception will indeed be great!
2 Thessalonians 2:3 (New American Standard Bible) 3 Let no one in any way deceive you, for it will not come unless the apostasy comes first, and the man of lawlessness is revealed, the son of destruction,
I recently heard that the normal translation from the Greek of this word apostasy, or falling away in other English translations, in this verse is debatable.. more like taking away instead of falling away? I am not a Greek scholar so I am not sure and I thought I would ask on FR when your post reminded me of it.