I use the term "God of the Hebrews" only to acknowledge that the god people believe in today are one and the same. It is an insight into his character.
A god with no standards would be as useful as a king with no laws.
Governments today have laws that inhibit certain things that we would deem enjoyable do they not? That is because what is enjoyable is not always good for us or society as a whole.
Keeping that in mind, Gods kingdom is supposed to be the means by which he is to restore the earth and his purpose. What good is a man to a kingdom if he does not wish to be under its guidance. How do you maintain that kingdom if most of inhabitants are not inclined to obey the laws of its ruler?
If you want to apply for citizenship for specific country, do you not think you would have run into difficulties if you have a record of offenses that show you would not be interested in adhering to the laws of that land?
If God deems that adultery for instance would harm the peace of his intended society, then surely it is counterproductive to allow those that would continue to adulterate a visa.
If Armageddon is a day of judgement, it can be likened to a visa application decision day.
Righteousness is conforming to what is good by Gods standards rather than mans. You can be unrighteous without being wicked. According to scripture God seeks righteousness in man, not just a rejection of wickedness.
Absurd as you may opine, I have a bigger picture, it is merely different to yours.
Scriptural references available on request.