I am contemplating on making this a debate topic(where I argue that, given such a scenario, we should obey God), but for now I'll post it as a forum topic to maybe get more/various views in lighter format. Though feel free to write long paragraphs if you'd like to.
The world we're examining
The scenario here presents that the world we're examining is a world where, for the sake of argument, God 100% exists without question beyond room for doubt. For example one day everyone in the world all at once hear God talk to them in their mind, say at exactly 2/26/2025 5:00 pm gmt time, regardless of whether you're awake or asleep/unconscious. And then again at exactly 7:31 pm gmt time the next day. (If the scenario doesn't prove it to you, then use your imagination to imagine a scenario that can prove God to everyone. The scenario itself does not matter as much as constructing a world where, for the sake of argument, God's existence is known beyond possible doubt)
God's message
In the world we're examining, I'll present that we know what God's message is, be it what is written in the Bible, the Quran, a different religious book, similar to one/several of them, or a completely different message or set of messages from any of the holy books we have.
I'll personally recommend for the purposes of this exercise that we examine it as if, for the sake of argument, we know without room for misinterpretation *exactly* what God means by his words. But you're free to examine it instead where we could potentially misinterpret God's message if that interests you.
God's qualities
The scenario also presents that God has at least these qualities. Omnipotence, Omniscience and Omnipresence. And that we know beyond doubt that God has these qualities. And that God created the world and everything in it. Typically God is also associated with Omnibenevolence, however, for the sake of this exercise we won't assume that that is a known quality about God. That whether the God you're imagining in this exercise is in fact Omnibenevolent or not, such a thing would not be verifiable by us. For example God could be one that orders us things we find evil like killing innocent children, or one that promises us heaven if we obey him but actually lied about that and sends us all to hell no matter what we do. (Although you are free to instead attribute God to being known as Omnibenevolent if you find that more interesting)
Additionally, only one God exists, if any other powerful entities exist (Angels, Satan, etc.), even if they're more powerful than us, they wouldn't be to able to do anything or make any changes to the world that God doesn't allow, and that all their powers combined would still be infinitely less than God's power.
The question
Under such a scenario, should we obey God? (And how much/to what extent should we obey him?) And in whichever case the answer is, would that answer be because of ethical reasons, pragmatic reasons, and/or whichever else other reasons you can think of? Additionally can you imagine variables that would change your answer to this exercise? (Such as for example the specifics of what God's message is)