² not to become easily unsettled or alarmed by the teaching allegedly from us—whether by a prophecy or by word of mouth or by letter^(A)—asserting that the day of the Lord^(B) has already come.^(C)

³ Don’t let anyone deceive you^(A) in any way, for that day will not come until the rebellion^(B) occurs and the man of lawlessness^[a] is revealed,^(C) the man doomed to destruction.