15 But the free giving of God is not like the wrongdoing of man. For if, by the wrongdoing of one man death came to numbers of men, much more did the grace of God, and the free giving by the grace of one man, Jesus Christ, come to men. 16 And the free giving has not the same effect as the sin of one: for the effect of one man's sin was punishment by the decision of God, but the free giving had power to give righteousness to wrongdoers in great number. 17 For, if by the wrongdoing of one, death was ruling through the one, much more will those to whom has come the wealth of grace and the giving of righteousness, be ruling in life through the one, even Jesus Christ.
Matthew Henry's Commentary on Romans 5:15-17
Commentary on Romans 5:15-19
(Read Romans 5:15-19)
Through one man's offence, all mankind are exposed to eternal condemnation. But the grace and mercy of God, and the free gift of righteousness and salvation, are through Jesus Christ, as man: yet the Lord from heaven has brought the multitude of believers into a more safe and exalted state than that from which they fell in Adam. This free gift did not place them anew in a state of trial, but fixed them in a state of justification, as Adam would have been placed, had he stood. Notwithstanding the differences, there is a striking similarity. As by the offence of one, sin and death prevailed to the condemnation of all men, so by the righteousness of one, grace prevailed to the justification of all related to Christ by faith. Through the grace of God, the gift by grace has abounded to many through Christ; yet multitudes choose to remain under the dominion of sin and death, rather than to apply for the blessings of the reign of grace. But Christ will in nowise cast out any who are willing to come to him.