That one doesn't fit because it was not a prophet telling the Israelites that.
No one can seriously contest that Jonah was a true prophet, giving a true prophetic word to the City of Nineveh when he prophesied: "Yet forty days, and Nineveh shall be overthrown.". No conditionality in that word, NONE, ZERO. Nineveh WAS NOT OVERTHROWN IN 40 DAYS, the prophecy DID NOT come to pass. Should Jonah be stoned to death? Was he a false prophet?
Don't mistake understand my point here. It IS NOT that many of these election words were not false, just that I'm not so quick to flail away with the stones, knowing God can change his mind and there may be unspoken conditions we just don't know of.
God Himself is not a prophet?
And in a sense, it is a prophet relating this to us, given that Moses is the titular author of Exodus.
But that doesn’t contradict what you’re pointing out; it actually agrees.