I don't know which chapter is 559, nor do I know why it hasn't been updated. But generally speaking, the speed of a novel's update would be affected by many factors, such as the author's update speed, reader feedback, the time of publication of the novel, and so on. If the author didn't give any updates or explanations, it was likely that he was busy with other matters or needed some time to prepare a new chapter. If you really want to know about the updates of the God-defying Evil God, you can follow the author's social media account or comment on his works. He may give some notifications or explanations in the future.