Rambam explains the apparent references in Ecclesiastes that seem to indicate that the laws of nature are not forever. In Chapter 29 he begins his analysis of the verses in prophets that seem to discuss that the universe will not always exist.

Guide For the Perplexed - Lecture 75: Part 2 Chapters 29b

Join us as we study the monumental work of Maimonides, The Guide of the Perplexed. Let Maimonides speak to us in a language that we can understand, about issues that continue to perplex us in the 21st century. Learn how to approach those difficult times when what we believe seems to conflict with what the Holy writings say.