Why didn’t god just tell all the people when he had the chance? God forgets

Exodus 19:11 says, “And be ready against the third day: for the third day the LORD will come down in the sight of all the people upon mount Sinai.

19:12 And thou shalt set bounds unto the people round about, saying, Take heed to yourselves, that ye go not up into the mount, or touch the border of it: whosoever toucheth the mount shall be surely put to death:

19:13 There shall not an hand touch it, but he shall surely be stoned, or shot through; whether it be beast or man, it shall not live: when the trumpet soundeth long, they shall come up to the mount.

19:14 And Moses went down from the mount unto the people, and sanctified the people; and they washed their clothes.

19:15 And he said unto the people, Be ready against the third day: come not at your wives.

19:16 And it came to pass on the third day in the morning, that there were thunders and lightnings, and a thick cloud upon the mount, and the voice of the trumpet exceeding loud; so that all the people that was in the camp trembled.

19:17 And Moses brought forth the people out of the camp to meet with God; and they stood at the nether part of the mount.

19:18 And mount Sinai was altogether on a smoke, because the LORD descended upon it in fire: and the smoke thereof ascended as the smoke of a furnace, and the whole mount quaked greatly.

19:19 And when the voice of the trumpet sounded long, and waxed louder and louder, Moses spake, and God answered him by a voice.

19:20 And the LORD came down upon mount Sinai, on the top of the mount: and the LORD called Moses up to the top of the mount; and Moses went up.

19:21 And the LORD said unto Moses, Go down, charge the people, lest they break through unto the LORD to gaze, and many of them perish.

19:22 And let the priests also, which come near to the LORD, sanctify themselves, lest the LORD break forth upon them.

19:23 And Moses said unto the LORD, The people cannot come up to mount Sinai: for thou chargedst us, saying, Set bounds about the mount, and sanctify it.

19:24 And the LORD said unto him, Away, get thee down, and thou shalt come up, thou, and Aaron with thee: but let not the priests and the people break through to come up unto the LORD, lest he break forth upon them.

19:25 So Moses went down unto the people, and spake unto them.”  Why the big runaround?  The people got all ready to listen to god.  They could see his power and hear him call Moses up to the top of the mountain, then he sends Moses down and has the whole process start again.  Then he doesn’t talk to them.  He even forgets that the priests cannot go through the bounds around the mountains.  But he does want Aaron to go beyond the boundary.