“And if children, then heirs; heirs of God, and joint-heirs with Christ; if so be that we suffer with him, that we may be also glorified together.”
King James Version (KJV)
8:17 Joint heirs - That we may know it is a great inheritance which God will give us for he hath given a great one to his Son. If we suffer with him - Willingly and cheerfully, for righteousness' sake. This is a new proposition, referring to what follows.
Ro 8:17 If children, then heirs. Observe the chain of argument: (1) We are the sons of God (Ro 8:14). (2) This is shown by our having received the Spirit of adoption (Ro 8:15). (3) Both God's Spirit and our own spirit witness together that we are children of God (Ro 8:16). (4) But children are heirs; hence we are heirs of God, and joint-heirs with Christ. Under the Jewish law the older brother had a double portion, but Christ admits all to a joint share of the great inheritance. If . . . we suffer with [him]. In the figure, we suffer with him when we are "baptized into his death" (Ro 6:3). We are "crucified with him" (Ro 6:6); become "dead to sin" (Ro 6:2); "are buried with him" (Ro 6:4); "are planted together in the likeness of his death" (Ro 6:5). Hence, in these respects we have the "fellowship of his sufferings" (Php 3:10). But we must be ready, for his sake, to bear the cross through life (Mt 16:24 Mr 8:34 10:21 Lu 9:23). If we do all these things, we shall be "glorified together" with him also.