Paul didn’t have much time with the Thessalonians. It was only about month. So he was writing a letter to them. The trouble Paul had in Philippi caught up with him in Thessolonica. So he had to leave. He wrote in Thessalonians 3,4, about having tribulation. That they shouldn’t be amazed that they would recieve tribulation. It is part and parcel with Christianity. The world hated Jesus. They will hate us for believing. Paul wrote to comfort them to be able to stand. Walking in the unknown is scary. And having the assurance that this the right way, we will go forward. Paul also wrote to them about the dead in Christ. He assured them the they will rise first when Jesus returns. Paul not only wrote to the Thessalonians, he wrote to us. That we can have assurance the God is in control and keeping us. And that the dead in Christ will rise first. Jesus will return with the voice of the archangel and the trump of God. And we will be caught with Him in clouds. And so shall we ever be with the Lord.