True, as we have already remarked, he himself was made a subject of grace, and the possessor and exhibitor of a lively faith in a promised Savior; but this was not any thing natural, but something entirely divine. And, inasmuch as it was not natural, neither was it within the range of nature's capacity to communicate it. It was not, by any means, hereditary. Adam could not bequeath nor impart his faith to Cain or Abel. His possession thereof was simply the fruit of love divine. It was implanted in his soul by divine power; and he had not divine power to communicate it to another. Whatever was natural, Adam could, in the way of nature, communicate; but nothing more. And seeing that he, as a father, was in a condition of ruin, his son could only be in the same. As is the begetter, so are they also that are begotten of him. They must, of necessity, partake of the nature of him from whom they have sprung. "As is the earthy, such are they also that are earthy." (1 Cor. xv. 48.) Nothing can be more important, in its way, than a correct understanding of the doctrine of federal headship. If my reader will turn, for a moment, to Rom. v. 12-21, he will find that the inspired apostle looks at the whole human race as comprehended under two heads. I do not attempt to dwell on the passage; but merely refer to it, in connection with the subject in hand. The fifteenth chapter of first Corinthians will also furnish instruction of a similar character. In the first man, we have sin, disobedience, and death. In the Second man, we have righteousness, obedience, and life. As we derive a nature from the former, so do we also from the latter. No doubt, each nature will display, in each specific case, its own peculiar energies; it will manifest, in each individual possessor thereof, its own peculiar powers. Still, there is the absolute possession of a real, abstract, positive nature.