When Adam sinned he lost the likeness of God.   His son Seth was born in Adam`s image.   Every natural child of man since then has been born in the image of man.   

Christ came that we may be Born Again in the Image of God.   In Christ ( New Birth) we are now Sons of God.   As Sons we should be like Him, i.e.   manifest His Image.   
How do we do that?   

God is a Spirit.   We are made Spirit beings in the New Birth.   We are instructed to Walk in the Spirit.   

The Holy Spirit manifests the Image ( Character) of God.   The Holy Spirit operates on God`s Word to manifest or teach us about Christ.   

When we feed on the Word the Holy Spirit empowers our spirit to change the way we Live ( Walk).   We cease living by Physical and Emotional feelings and begin to Live by what God says in His Word.