After the resurrection Jesus sent His followers to take the gospel into all the world (Mk.16:15).
Unfortunately, this material is so familiar we tend to miss the significance of what's being said.
Because Jesus' instruction here is more than just a clear command...
... it reveals our relationship to the world.
It shows His intent for us is not to escape the world.
Or conform to it.
But to transform the whole world by proclaiming and applying the good news that Jesus has come to bring His kingdom.