Romans 8:14-17

All who are led by the Spirit of God are sons of God. You did not receive a spirit of slavery leading you back into fear, but a spirit of adoption through whom we cry out, “Abba!” (that is, “Father”). The Spirit himself gives witness with our spirit that we are children of God. But if we are children, we are heirs as well: heirs of God, heirs with Christ, if only we suffer with him so as to be glorified with him.