Romans 8:9-11, 14

But you aren’t self-centered. Instead you are in the Spirit, if in fact God’s Spirit lives in you. If anyone doesn’t have the Spirit of Christ, they don’t belong to him. If Christ is in you, the Spirit is your life because of God’s righteousness, but the body is dead because of sin. If the Spirit of the one who raised Jesus from the dead lives in you, the one who raised Christ from the dead will give life to your human bodies also, through his Spirit that lives in you.

All who are led by God’s Spirit are God’s sons and daughters.