Did you forget prophecy doesn't have to happen?
Makes no difference if it's written. You should read your bible more.
Jeremiah 18:7-8
If at any time I announce that a nation or kingdom is to be uprooted, torn down and destroyed, and if that nation I warned repents of its evil, then I will relent and not inflict on it the disaster I had planned.
Why wouldn't I? I'm not under that law.