mystery. App-193.
iniquity. lawlessness. App-128.
work. work actively, as 1 Thessalonians 2:13.
letteth. holds fast. Greek. katecho, as 2 Thessalonians 2:6. Supply the Ellipsis by " there is one who holds fast", instead of by repeating the verb " will let ". But katecho is. transitive verb, and an object must be supplied too. See all the occurances: 2 Thessalonians 2:6. If the subject be Satan, the object must be his position in the heavenlies (Ephesians 6:12), from which he will be ejected by Michael (Revelation 12:7-9).
out of the way. out of (Greek. ek) the midst. Compare the same expression in Acts 17:33; Acts 23:10. 1Co 5:2. 2 Corinthians 6:17; Colossians 2:14.