When the Torah laid out the rules for Israel's king, it gave three specific warnings. In Deuteronomy 17, Moses wrote that the king shall not acquire for himself many horses. He shall not take for himself many wives, lest his heart turn away. And he shall not accumulate too much silver and gold.
King Solomon broke all three.
He stabled horses from Egypt by the thousand. He married seven hundred wives and took three hundred concubines. He accumulated gold until silver lost value in Jerusalem. He was the wisest king Israel ever had — and he read the Torah the way a talented lawyer reads a contract, looking for the spirit that could excuse him from the letter.
Rabbi Simon teaches that the angels themselves watched this, troubled. They approached the Holy One with a grievance.
"Sovereign of the world," they said, "Solomon has made Your law like an ordinary law — subject to repeal, subject to amendment. Three precepts he has disregarded. If Your wisest king treats Your Torah as negotiable, who will hold it fixed?"
And the Holy One answered them. "Solomon will perish from the earth. A hundred Solomons will perish after him. And not the smallest letter of the Torah will be changed."
The kings are mortal. The kingdoms pass. The yud stays.