Biblical theologians agree this may be the most obscure passage in all of Paul's writings. The general topic of the passage is the coming of Jesus Christ and the end of human history. The Thessalonians had received a letter containing false claims about the "Day of the Lord," the day when Jesus will come back and gather His people. While only God knows the exact time, Christians should not be surprised, because God has given us some clues to help us recognize the day approaching. The Thessalonians had received false information that lead them to fear that these events had already taken place, and so Paul is writing to them to remind them of the things they had been taught. Five questions relevant to the passage are discussed: 1) what is this about?, 2) what is the "apostasy?", 3) who is the "man of lawlessness?", 4) who/what is the "restrainer?", and 5) what is the "deluding" influence? In the face of this future we know is coming, Christians can take comfort in the promise to be loved by God forever. We know that Jesus is coming back, therefore, Paul encourages the Thessalonians to stand firm and hold to the truth.