Thematic Bible: Why the law was given

Therefore as by the offense of one judgment came upon all men to condemnation; even so by the righteousness of one the free gift came upon all men unto justification of life. For as by one man's disobedience many were made sinners, so by the obedience of one shall many be made righteous. Moreover the law entered, that the offense might abound. But where sin abounded, grace did much more abound: read more.
That as sin has reigned unto death, even so might grace reign through righteousness unto eternal life by Jesus Christ our Lord.