Romans 8:14-17
8:14 For all who are led by the Spirit of God are the sons of God.
8:15 For you did not receive the spirit of slavery leading again to fear, but you received the Spirit of adoption, by whom we cry, “Abba, Father.”
8:16 The Spirit himself bears witness to our spirit that we are God’s children.
8:17 And if children, then heirs (namely, heirs of God and also fellow heirs with Christ) – if indeed we suffer with him so we may also be glorified with him.
Romans 8:21
8:21 that the creation itself will also be set free from the bondage of decay into the glorious freedom of God’s children.