It isn't often that someone will die for a righteous person, though maybe someone might dare to die for a good person.
But God shows his love for us, because while we were still sinners Christ died for us.
So, now that we have been made righteous by his blood, we can be even more certain that we will be saved from God's wrath through him.
If we were reconciled to God through the death of his Son while we were still enemies, now that we have been reconciled, how much more certain is it that we will be saved by his life?
And not only that: we even take pride in God through our Lord Jesus Christ, the one through whom we now have a restored relationship with God.
So, in the same way that sin entered the world through one person, and death came through sin, so death spread to all human beings with the result that all sinned.
References for Romans 5:12
Although sin was in the world, since there was no Law, it wasn't taken into account until the Law came.
But death ruled from Adam until Moses, even over those who didn't sin in the same way Adam did—Adam was a type of the one who was coming.
But the free gift of Christ isn't like Adam's failure. If many people died through what one person did wrong, God's grace is multiplied even more for many people with the gift—of the one person Jesus Christ—that comes through grace.
The gift isn't like the consequences of one person's sin. The judgment that came from one person's sin led to punishment, but the free gift that came out of many failures led to the verdict of acquittal.
If death ruled because of one person's failure, those who receive the multiplied grace and the gift of righteousness will even more certainly rule in life through the one person Jesus Christ.