They're in charge of it all. And it was believed that when you passed on and when the pharaoh passed on that their soul was eternal. It was called the eternal spirit, Ka, K-A, the Ka. And this spirit would reign forever. So that's why they needed a place to let the Ka live, hence the pyramids. So the old kingdom, and this is again, you know, 4,000 years ago, are going to be the people that built the pyramids. And you don't have to say much to be awestruck by looking at the pyramids, but knowing that they hadn't invented the wheel, that there's no light source other than the sun, that it took up to 2 million blocks of stone to build a pyramid like the pyramid at Giza.