This past week in the holy city of Boston, a miracle happened not once but twice. On Tuesday and Wednesday nights, Paul McCartney, who is eleven days shy of 80 years old, rocked on at Fenway Park. Fenway was jammed to the rafters, and this 80-year old singer wowed and captivated a full park for two and a half hours. Thirty songs. Did I mention that he is 80?

How does an 80-year-old still have the energy, the charisma, the voice to hold that big of an audience for that long?

How does a performer continue to perform the same songs that he has been singing, some of them Beatles classics like Can’t Buy Me Love, Hey Jude and Ob-La-Di, Ob-La-Da for 60 years, with fresh energy? Can you do that? Can you do the same thing for 60 years, with fresh energy? Could I give the same sermon for 60 years, with fresh energy? Could you hear my same sermon for 60 years, with fresh energy? How does he do that?