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. And if children, then heirs - For the legitimate children can alone inherit the estate. This is not an estate to which they succeed in consequence of the death of a former possessor; it is like the promised land, given by God himself, and divided among the children of the family.
Heirs of God - It is neither an earthly portion nor a heavenly portion; but God himself, who is to be their portion. It is not heaven they are to inherit; it is God, who is infinitely greater and more glorious than heaven itself. With such powers has God created the soul of man, that nothing less than himself can be a sufficient and satisfactory portion for the mind of this most astonishing creature.
Joint heirs with Christ - Partaking of the same eternal glory with the glorified human nature of Christ.
If so be that we suffer with him - Observe, says Dr. Taylor, how prudently the apostle advances to the harsh affair of suffering. He does not mention it till he had raised up their thoughts to the highest object of joy and pleasure - the happiness and glory of a joint inheritance with the ever-blessed Son of God.
We are heirs, heirs of God, and joint heirs with Christ, if so be that we suffer with him. This, with the additional consideration that we suffer with Christ, or, as he himself suffered, would greatly qualify the transitory afflictions of this world, and dispose them to attend to the other arguments he had to offer.