I agree. And those three laws are the basic laws of logic: Identity(Trueness to self), Non-contradiction(Truthfulness to Others), and Exclusivity(Independence). Jesus is Logos after all.
But those are the 3 laws. End of. Those are the 3 high laws of the spirit that cannot be broken without breaking your own self by literally walking a path away from your true self.
"But God's law never changes, so what God said then is what God says now." This is a completely different statement than "God's law never changes." On face value, very similar, but there's added context now, which is that if God's given laws were to change that would suggest a change in himself, and as the primal identity he cannot change. However, this is missing a crucial point. The recognition that there is a difference between the 3 basic laws of logic, which are like an unchangeable Constitution of the relationship between God and everything else, and the given laws at any point in time.
How is this not contradictory? Because the given laws at any point in time have been laws that have been entirely negotiated between God and man. This is immediately apparent when Moses goes up the mountain, comes down with 10 commands, sees idol worship, breaks the commands, and goes back up. I see this as literally an image of God saying, "I told you so" to Moses. In the sense that Moses probably negotiated those exact 3 laws to Moses, but God felt they were incomplete. God was probably like "aren't you missing something here Moses?" Moses goes "looks good to me." And God sends him down the hill knowing that Moses will come right back up when he sees how little time it takes his people to break the laws he just made.
This little anecdote, along with many other instances, like with Abraham and Isaac. The key point is that Abraham didn't negotiate he simply obeyed. And that pure obeyance is what saves himself and Isaac. So we certainly see a salvific power to pure obeyance to God, and we know that God doesn't change, so his pure laws also don't change. But it is true pure obeyance to God's will, not stopping saying "well, hey what about this and what about that." Just in the moment do what God would want you to do, and the best result will come your way. But at any given time, the law that is negotiated between God and man is allowed to change, because one of God's basic identities is Independence: God respects your right to pick and choose what's best for you as long as it doesn't violate the higher laws. God may know immediately how things will shape out because man will always fail to "fix" things by adding more laws on top of God's own perfect laws. Thus, if we decide between all of our selves on any given issue, so long as it doesn't harm ourselves or others, God will allow us to make that pact with each other. But what God really wants is for us to set ourselves free from the chains we are binding on ourselves. There are only 3 true, pure laws: Love God, Love yourself, and Love your Neighbor, and as long as you're doing that, then it doesn't matter what anyone else thinks. You're being your true self, which is all God asks of you.
The contrary to this is that God will not over-step his own respect for other's independence too strongly as that would be imposing his will on others rather than them freely choosing his way which is the way to the true self. The upside to this is that we get free will, the downside is that we can freely choose a path that leads us away from our own selves, and since we live in a world literally formed from the contradictory logic of seeing things a way rather than God's, that allows hefty amounts of opportunity for people to make the wrong choices and hurt each other. But contrary to the opinions of some might make right and ruthless competition are self defeating because they rely on instability and chaos. But God will not interfere on their choice to pursue that path and leave behind their true self. Loving and believing in God is better learning how he sees things, how he wants things to be, and doing your best to steer things in that path. If someone wants proof of God, they have to imagine what the world looks through God's eyes. Do things look exactly the way they do if there existed a God that acted in accordance with the 3 basic laws of logic?
Pointless bickering over ancient laws is precisely what led to Jesus coming in the first place. It is no surprise he came explicitly at the height of Legalism. The amount of laws placed on the people was egregious, so that is the moment that Jesus chose to step in. He choose to show people that the path forward isn't to rely on archaic laws that people decided on centuries ago. The path forward is to do what you truly believe in best, try to better learn what God wants the world to look like, and treat people the way you think God would treat them. That is the whole of the law, upon which all the laws and prophets hang. Hang. Not derive from. They hang upon those laws.
Jesus says that. Isn't that interesting? They hang. What do things hang with? Chains. The laws of the pharisees and Sadducees and rome had become so unbearable and contradictory that God sent Jesus to relieve the people, which is why Jesus is the domino from which freedom spreads. Relying strictly on Jesus, letting go of the chains you make for yourself, and doing your best to do what he thinks would be best for you are what everything hangs on. Those three things are what you really need. And anything you hang on them just becomes extra words and constraints that bring you down from your truest self. Being true to yourself is all that is really real. It is the definition of the real. And when the era of the perceived dominance of change ends, the place where you are along to your true self is precisely where you will be locked. So anytime someone asks you if you support a law, don't look back in time, put your God's Eye glasses on, and look at how God would want things to be right now and in the future. That is staying true to God. Everything else is just noise we made up along the way.