Thematic Bible: Why the law was given

So as one offense meant condemnation for all men, just so one righteous act means acquittal and life for all men. For just as that one man's disobedience made the mass of mankind sinners, so this one's obedience will make the mass of them upright. Then law slipped in, and multiplied the offense. But greatly as sin multiplied, God's mercy has far surpassed it, read more.
so that just as sin had reigned through death, mercy might reign through uprightness and bring eternal life through Jesus Christ our Lord.