15For you did not receive the spirit of slavery to fall back into fear, but you have received the Spirit of adoption as sons, by whom we cry, "Abba! Father!" 16The Spirit himself bears witness with our spirit that we are children of God, 17and if children, then heirs-heirs of God and fellow heirs with Christ, provided we suffer with him in order that we may also be glorified with him.

Romans 8:15-17