part of the mainstream Protestant Church in the Netherlands (PKN), and the service is conventional enough, with hymns, readings from the Bible, and the Lord's Prayer. But the message from Mr Hendrikse's sermon seems bleak - "Make the most of life on earth, because it will probably be the only one you get".
"Personally I have no talent for believing in life after death," Mr Hendrikse says. "No, for me our life, our task, is before death."
Nor does Klaas Hendrikse believe that God exists at all as a supernatural thing.
"When it happens, it happens down to earth, between you and me, between people, that's where it can happen. God is not a being at all... it's a word for experience, or human experience."
Mr Hendrikse describes the Bible's account of Jesus's life as a mythological story about a man who may never have existed, even if it is a valuable source of wisdom about how to lead a good life.
His book Believing in a Non-Existent God led to calls from more traditionalist Christians for him to be removed. However, a special church meeting decided his views were too widely shared among church thinkers for him to be singled out.