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First let us consider how people behave and think in the absence of God. If an atheist is legitimately more intelligent than other people, he will see that he is right about many things, and then this will make him start to believe he is right about everything, And he will use his own thoughts and speculations as the standard of truth. This is why most internet forum moderators feel no shame in deleting posts they disagree with. They are so certain that they are right and the other person is wrong, because they have no sense of God to humble them.
Some atheists though might be humbled by the intelligence of another person. They see that time and time again the other person is right, so they will use this other person's thoughts and speculations as the standard of truth. This seems like it would give rise to hierarchical tendencies among atheists, which would explain why communist societies like to push atheism.
Monotheists on the other hand believe there is a single great all-powerful God. He is described as being so great and powerful, that he utterly dwarfs the best and most powerful people in goodness and power. This creates a sense of humility in people, no matter their standing, because if God is so much better than them, there must be many ways that they are flawed. It also induces a sense of equality in the people, because if God is so much better than everyone else, then the people themselves are roughly equal relative to God. If people are equal, this means that one person cannot be better than another, and instead differences are only a result of people being adapted to their own domain. And this would imply that people should respect the autonomy of others. A plumber knows what is best for plumbing, a king knows what is best for ruling a country, a homeowner knows what is best for his house, and a person knows what is best for himself. If a person is unhappy in a kingdom, this does not necessarily mean that the king is bad or the person is wrong for being unhappy, but rather that the person is incompatible with the kingdom and that what he should do to avoid violating infringing on the domain of the king is to move/escape.
On the other hand, God commands the people to enforce morality, so for moral issues the previous paragraph does not apply. People must as a society punish people for violating the laws of God, because this is what God commands. God's commands would override any respect for autonomy that the oneness of God would seem to suggest.