There is SO MUCH in this portion of Scripture and I do NOT pretend to know all that can be learned here! There are two different groups of people that stand out to me here. There are those who are "watchers". These are the ones looking for Christ. Then there are the "sleepers". These are the ones not looking for Christ.
If you are a watcher, you KNOW the Lord is going to come as a thief in the night (v2), therefore you are always looking for Him. If you are a watcher, you are sober (v6,8) and you have faith, hope, love, and comfort (v8, 11). If you are a watcher, you are a child of light (v5).
If you are a sleeper, you expect to have peace and safety (v3) throughout your life. If you are a sleeper, you will find sudden destruction and travail (v3) and you will not be able to escape. If you are a sleeper, you are sleeping (obviously!) and drunk (v6-7). If you are a sleeper, you are a child of darkness (v5).
These are interesting contrasts. I hope to be a "watcher" ready for my Lord to return. "Work for the night is coming!"
"Behold, I shew you a mystery; We shall not all sleep, but we shall all be changed, In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed. For this corruptible must put on incorruption, and this mortal must put on immortality." I Corinthians 15:51-53