There are those today who call themselves Christians and see little or no difference between the child of God and the child of the Devil (John 8:44, 47); believing that all people reflect God in their lives. The Holy God is reduced to common, ordinary, and made in our image.
I was part of a denomination which went so far in its “Church Revitalization” program to require its pastors to invite unsaved people from the church neighborhood in for a Sunday service to critique and offer suggestions on making the services more welcoming to them. It’s akin to inviting a blind man to scrutinize the Mona Lisa or a dead women to plan your party.
In Ephesians 2, Paul listed some of the grim conditions of the unsaved person and the benefits of being in Christ. Remember that you … were without Christ, being aliens from the commonwealth of Israel, strangers from the covenants of promise, having no hope and without God in the world. But now in Christ Jesus you were once were far off have been brought near by the blood of Christ …. Now, therefore, you are no longer strangers and foreigners, but fellow citizens with the saints and members of the household of God (Ephesians 2:11-13, 19).
Rejoice! Child of God. You are different through Jesus.