Van der Dong said he set up the number to give people an opportunity to take pause and contemplate life.
"Like praying, leaving a voicemail message is a way to organize your thoughts," he said. "It's a perfect combination for some contemplation."
Callers dialing 06-4424-4901 (or +316-4424-4901 if calling from outside the Netherlands) from March 7 will hear.
"Hi, you are speaking to God. I'm not in right now so leave a message after the beep."