Mormon 1:3

therefore when ye are about twenty and four years old, I would that ye should remember the things that ye have observed concerning this people; and when ye are of that age, go to the land of Antum, unto a hill, which shall be called Shim; and there have I deposited unto the Lord, all the sacred engravings concerning this people.

So when you are about twenty-four years old, I want you to remember what you have seen about these people. When you reach that age, go to the land of Antum. Go to a hill called Shim. I have put all the sacred writings about these people there for the Lord.

“So when you turn twenty-four, I want you to remember everything you’ve seen happen to this people. Then go to the land of Antum, to a hill called Shim. That’s where I’ve hidden all the sacred writings about this people.”