How can one person possibly change the destinies of all people? 

Paul has just claimed that Jesus, through his death and resurrection, made it possible for all people to have eternal life. To explain how something like this could be possible, Paul turns to Adam, the first man, and shows how Adam did something that affected all of us. Since Adam could do so, how much more could God's Son, Jesus do the same or better? That's the gist of this complicated section in the Book of Romans.

Sermon notes can be found here.