This is weak. You claim there are consequences, and yet you can't tell us what these consequences are, and when pushed your only answer is some vague wishy washy nonsense that means absolutely nothing.
There is infinite mechanisms you can imagine. However it comes down to two ways, force or make truth appealing to the extent there is no remove to waver.
The problem with force is everyone would fear God while he is not unseen, and so fear of God with this type of enforcement is not like fear of God by the unseen/hidden, as it is now. It will have no element of love to it or very little of it.
The other type of thing is he could have made Adam of a body that none of the Angels would object to, because its even more amazing than their nature.
He could have made it that Prophets honor can't be assaulted, made his chosen kings invulnerable, and there no way for conflict with them or to put out their truth through falsehood.
But good and evil would not exist in these scenarios, and there be little value to worship God and ascending to him would not occur in a meaningful way.
Of course this does not mean a world of suffering had to happen. But it means it has to be possible for it to happen, for there to be significant meaning.
God opted to reward the good and sacrifice the evil ones fate, rather than making a world where there is no good and evil.
Of course, the bigger trial, the bigger reward, however, the trials with Adam and Angels prostrating was difficult, but the chances were all submit. Iblis was something not expected, of course, God always knew it was possible, but it was expected all obey.
Why do we pay the price? Because, if he made a lesson out of him, we would all fear consequences of disobeying or trying to misguide others, and worship of God would have little value, and so we would have little meaning.
So he was allowed to live and lead astray. But it was expected Adam remain steadfast especially since he was one of God's chosen and elite.
But that went bad.
And then God created this world of his mercy and as means of trial. But when Successors of Adam (A) were disobeyed and Nuh (a) could not save the people, things have gone terrible bad since.
When believers are saved, they become ungrateful after, and begin to act different when brought to safety.
Over all, we have not been able to emphasize on each other to be sincere. God expected we emphasize to one another to be sincere to Him and created this world, so we prove our worth to him collectively.
All things have gone terrible way when they were not meant to happen. God looks bad, when he has been trying to fix us.
Fate has been unkind it was improbable, but God did not want this. It is error handling upon error handling. The trials were not that difficult that this would come about.
But here we are, we can blame God or blame in reality who misguiding forces are and who are the cause of suffering, and try to change the situation.
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