In John 17:6, the disciples are given out of the world to Jesus, revealing the divine origin of their non-worldly status.

In John 17:14, the same declaration adds that the world hates the disciples because they are not of the world.

In John 8:23, Jesus declares He is not of this world—the same basis for believers' identity in John 17:16.

In 1 John 4:5, false prophets are 'from the world', directly contrasting the disciples' not-of-the-world status.