It is rare for anyone to die for a righteous person—though for a good person someone might just dare to die.
In context
5And hope does not put us to shame, because God’s love has been poured into our hearts through the Holy Spirit given to us. 6For while we were still helpless, at the right moment, Christ died for the ungodly. 7It is rare for anyone to die for a righteous person—though for a good person someone might just dare to die. 8But God proves his own love for us in this: while we were still sinners, Christ died for us. 9How much more, then, now that we have been justified by his blood, will we be saved through him from the wrath to come.