Let’s imagine that Franklin D. Roosevelt had possessed the same gift for longevity as Jimmy Carter and lived until he was 100. He would have died in1982, in Ronald Reagan’s second year in office.

President Jimmy Carter will be eulogized by President Joe Biden in Washington D.C. on Thursday, in a service that is expected to see all five living presidents attend, including President-elect Trump, and former presidents Bill Clinton, Barack Obama, and George W. Bush.

Mr. Carter said his spiritual rebirth was an “evolutionary thing” rather than “a flash of light or a sudden vision of God speaking.”