Former President Barack Obama plans to visit Germany in May to sit down with German Chancellor Angela Merkel for a panel discussion on democracy, returning to the global stage after what will be four months out of the White House.
Obama and German Chancellor Angela Merkel enjoyed a drink together during the former President's 2013 trip to Berlin.
"President Barack Obama's attending the Kirchentag in Berlin, which will ring in the Reformation Summer, underlines the global character of our 500th anniversary celebrations", said Bedford-Strohm.
They will discuss "shaping engaged democracy and taking responsibility at home and in the world" in front of the historic Brandenburg Gate, the officials with Germany's Protestant church said.
Luther's 95 theses, which he nailed to the door of a church in eastern Germany's Wittenberg in 1517, led to the split with the Catholic church and gave birth to Protestantism.
Merkel and Trump spoke by telephone on Monday.
Heinrich Bedford-Strohm invited President Obama in May 2016 to visit Germany for the Reformation anniversary.
Obama was in Berlin in mid-November on his last European trip as president.
Obama has not kept quiet about his successor as some past presidents have done.
Just weeks before signing a lucrative book contract that will pay him and his wife, former first lady Michelle Obama, a whopping $60million for two memoirs, the Obamas were seen kicking back on Richard Branson's Necker Island, the billionaire's secluded getaway in the British Virgin Islands.
A crowd of more than 200,000 turned out to hear the then presidential candidate Obama speak in Germany in July 2008.
Barack Obama is entering the political arena once again.
Germany and the USA have also expressed differences over global free trade agreements since Trump became president.