On the shelves in our music room in Sinntal, Hessen State, Germany, there is a very special relic near the grand piano and the house organ: a heavy 30 cm (nearly 12 inches) long, squared timber cut from the trunk of an ancient olive tree that once stood in the lower part of the garden of Gethsemane. When the new, small Golgotha organ for the Church of the Holy Sepulchre was built in 2016, the keyboards were made from this wood.