Have you ever wished that God gave you a specific to-do list on how to live according to his will? In a way 1 Thessalonians 5:11-23 does just that. It outlines specific ways that we should act if we are saved. These can all be under the general be said to be traits of our sanctification (4:3).
There are a variety of applications that can be drawn from this list. If we look at them all together we notice that many of these applications directly require other people
I think that this highlights our need for community and relationships. Yes, we do need to be in deep, real relationship with God (V16-22) but we also need one another. God has designed us to be living for Him together. Without each other, it would be incredibly difficult to live the life God has laid out for you.
This means a) being part of a bible-believing church. If you are not part of one, I highly encourage you to become part of one. b) be in regular, open, relationships with non-christian friends.
Both types of community are required for us to fulfill Gods will. Which are you missing?