Romans 8:16-18 The Spirit itself is a co-witness with our spirits that we are children of God.

Sawyer⁽ⁱ⁾ ¹⁶ The Spirit itself is a co-witness with our spirits that we are children of God. ¹⁷ And if children, [we are] also heirs, heirs indeed of God and co-heirs with Christ, if we suffer with him that we may also be glorified with him. ¹⁸ ^(6:3) For I think that the sufferings of the present time are of no account in comparison with the glory to be revealed in us.