The book of 2 Thessalonians gives us a glimpse of who Jesus is in the New Testament (N.T).
The 2nd book to the Thessalonians is essentially a book that clarifies some misunderstanding and questions that people had about the second coming of Christ, a.k.a. The day of the Lord. Some people felt that, that day had come and gone, which means for those who remained there was no hope. Paul quickly and deftly avers that the Day of the Lord is yet to be.
What is the day of the Lord? 1st Thessalonians talks about Rapture (caught up). 2nd Thessalonians is about his return (Second coming). These are two distinct events.
The day of the Lord, When is it?
Let’s not get caught in that trap – Warren Wiersbe (a famous Bible commentator) I think aptly put it when he said that the PURPOSE of Bible PROPHECY is for us to build Character and Not a Calendar, as date-setters are up-setters.
The day of the Lord, What happens?
The day of the Lord is the second coming of Jesus Christ to reign on earth with his saints. It is the time frame when the anti-Christ will be vanquished and destroyed. Jesus Christ is the THE CONSUMER and DESTROYER OF THE WICKED ONE, THE LAWLESS ONE (2 Thessalonians 2:8). Anti-Christ, the man of lawlessness, the Wicked One who opposeth God will be destroyed. But the Lord will destroy the destroyer of peace as he is the Lord of peace.
Jesus is the LORD OF PEACE (2 Thessalonians 3:16). Jesus is the LORD OF PEACE that can give us peace. He won’t have to make peace, because He is peace. He gives peace to all who believe in Him.
But then Apostle Paul shifts aptly from our focus on the day of the Lord to our focus on to the duty for the Lord. 1st Thessalonians counsels us to WAIT for the Lord while 2nd Thessalonians counsels us to WORK for the Lord (until His return).
In 2 Thessalonians, Jesus is the one revealed from heaven who is coming to earth to be glorified and admired, who is the Lord of Peace, the PEACE GIVER.
2 Thessalonians 2:8 (KJV)
8 And then shall that Wicked be revealed, whom the Lord shall consume with the spirit of his mouth, and shall destroy with the brightness of his coming:
2 Thessalonians 3:16 (KJV)
16 Now the Lord of peace himself give you peace always by all means. The Lord be with you all.