Separation from the world means moral and spiritual distinctness while Christians remain active, loving, honest, and useful among other people.
What Attitude Should True Christians Have Toward the World and Toward the People in It?
True Christians reject the world’s rebellious system, yet they show mercy, truth, and active love toward the people still trapped in it.
You Are No Part of the World (John 15:19, 21; 16:33)
Jesus teaches that Christians, while living in the world, must maintain moral and spiritual separation and resist worldly influences.

