No man can work his way to God, for, “No one does good, not even one,” and no one can will his way to God, for, “No one understands, no one seeks for God.” It is for this reason that the apostle writes later in the Epistle to the Romans, “So then, [salvation] depends not on human will or exertion, but on God who has mercy” (v. 9:16), and why he quotes the prophet Isaiah later in that same chapter concerning Israel, “If the Lord of hosts had not left us offspring, we would have been like Sodom, and become like Gomorrah” (v. 9:29).
The Good News is that God has not left us to ourselves. For Paul declares in Romans 5 that that same Offspring that preserved the life and the holiness of ancient Israel has come into the world as the Second Adam–the second head of the human race–and where the first Adam failed, the Second Adam, Jesus Christ, succeeded. Where the first Adam brought judgment into the world, the Second Adam–Jesus Christ brought justification into the world. Where the first Adam brought the reign of death, the Second Adam–Jesus Christ brought the reign of righteousness unto eternal life. Where the first Adam was disobedient, the Second Adam–Jesus Christ was obedient. Where the first Adam brought the condemnation of the law, the Second Adam–Jesus Christ brought the abundance of grace.