Romans 5:14 - Joseph Benson’s Commentary on the Old and New Testaments

Nevertheless Though the law was not yet given by Moses, yet sin was in the world, and was imputed, as appears by this, that death, which is the punishment of sin, was in the world at that time, and reigned Brought all under its power, from Adam to Moses As Romans 5:21, and Romans 6:12, even over them, &c. Not only over them that had sinned after the similitude of Adam's transgression, but also over infants that had not committed actual sin, as Adam had done, and over others who had not, like him, sinned against an express law. Who is the figure of him that was to come A lively type of Christ in his public capacity, each of them being a public person, and a federal head of mankind: the one the fountain of sin and death to mankind by his offence, the other of righteousness and life by his free gift. Thus far the apostle shows the agreement between the first and second Adam: afterward he shows the difference between them. The agreement may be summed up thus: As by one man sin entered into the world, and death by sin; so by one man righteousness entered into the world, and life by righteousness. As death passed upon all men, in that all had sinned; so life passed upon all men, (who are in the second Adam by faith,) in that all are justified. And as death, through the sin of the first Adam, reigned even over them who had not sinned after the likeness of Adam's transgression: so through the righteousness of Christ, even those who have not obeyed after the likeness of his obedience, shall reign in life. We may add, as the sin of Adam, without the sins which we afterward committed, brought us death: so the righteousness of Christ, without the good works which we afterward perform, brings us life, although still every good as well as evil work will receive its due reward.