“To everything there is a season. Yes. A time to break down, and a time to build up. Yes. A time to keep silence and a time to speak. Yes. - This quote from Ecclesiastes is one which is quoted often to remind people that change happens and that there are differences in the time in which we live. Now we know that Montag is making a change and there is now a new "season."
And on either side of the river was there a tree of life, which bare twelve manner of fruits, and yielded her fruit every month; And the leaves of the tree were for the healing of the nations. This quote from Revelation refers to the "end of the world," or in this case, the end of the world as Montag has known it. The tree of life hints at the possibility that the future world will be different and there will be healing between all of the nations who have been at war.