Is 31:Yet He also is wise and will bring disaster and does not retract His words.
1 Sam 15: Furthermore, the Eternal One of Israel does not lie or change His mind, for He is not man who changes his mind.
Numbers 23: God is not a man who lies, or a son of man who changes His mind. Does He speak and not act, or promise and not fulfill?
When the god you worship pronounces judgement, is he, really just issuing a warning or has the matter been determined through all the godly powers of insight, foresight and perfect judgement?
The prophets of course do the actual pronouncements, purportedly speaking for a god. What happens when the pronouncements of judgement do not happen? This was an issue for prophets. Were they to be denounced as "false" prophets? Was the prophetic pronouncement of judgement open to reinterpretation? Or perhaps the pronouncement's failure was not a prophet's failure but due to God's changing his mind?
Is that how you think of God? Someone who pronounces judgement without all the evidence and so he is given to changing his mind later?
Despite absolute statements like the opening quotations, the Bible is filled with examples of pronounced judgements that did not happen. In some particularly anthropomorphic cases this is because God is flattered and manipulated into changing his judgement. In other cases, the explanation is offered that the person or nation repented and therefore God changed his mind, taking back his words of judgement.
Doesn't this strike you as a very human thing to do? We have a system of justice that usually works adequately but is limited by our inability to "read hearts", know all things accurately and foresee the future. Judgements are overturned when it is learned that a sentence was pronounced based upon incomplete evidence. Is God similarly limited?
Jeremiah 18 famously reads:
6 “O Israel, can I not do to you as this potter has done to his clay? As the clay is in the potter’s hand, so are you in my hand. 7 If I announce that a certain nation or kingdom is to be uprooted, torn down, and destroyed, 8 but then that nation renounces its evil ways, I will not destroy it as I had planned. 9 And if I announce that I will plant and build up a certain nation or kingdom, 10 but then that nation turns to evil and refuses to obey me, I will not bless it as I said I would.
Clearly here the author tried to walk a fine line, his and earlier prophets' pronouncements of judgment and blessing were intended to be understood as possibilities, pending future, more complete, evidence.
IOW "God's judgements are certain to happen, but.........."
So then, 2000 years or so have passed since the pronouncement of imminent destruction of the nations of the world.
Might not someone conclude that God "changed his mind" and not do as he "had planned"?
Could this be a solution for sects like the WT? Simply emphasize passages like Jeremiah 18 and suggest God was impressed by the progress humans have made enough to postpone his plans to destroy them.