Here it is in a nutshell: Just as one person did it wrong and got us in all this trouble with sin and death, another person did it right and got us out of it. But more than just getting us out of trouble, he got us into life! One man said no to God and put many people in the wrong; one man said yes to God and put many in the right.
All that passing laws against sin did was produce more lawbreakers. But sin didn't, and doesn't, have a chance in competition with the aggressive forgiveness we call grace. When it's sin versus grace, grace wins hands down. All sin can do is threaten us with death, and that's the end of it. Grace, because God is putting everything together again through the Messiah, invites us into life—a life that goes on and on and on, world without end.