We are all under some sort of higher authority.
When a person comes to salvation, they are transported from the kingdom of
darkness and the authority of Satan, into the kingdom of light and the authority of Jesus.
They are saved from spiritual death in the here and now and from eternal death in the future.
Saved people have an advocate, a councillor, an almighty God on their side, an everlasting
Father. Saved people are precious in the eyes of God, they have access to the one who heals
their emotional pain if they let Him. They have access to the only one who is able to wipe all
tears from their eyes.
Ultimatley all we can do it spread the gospel and leave the rest to the Holy Spirit.
We know there is a difference, unsaved people don't know it until they experience
it for themselves.
One of the best ways to explain it to an unsaved people is to tell them your own testimony.