In the opening of John Steinbeck's novel Of Mice and Men, George is very specific about two things he wishes Lennie to remember.
First, George wants Lennie to remember to not say anything when their new boss asks him questions. George tells Lennie:
"What you gonna say tomorrow when the boss asks you questions?"
Lennie stopped chewing and swallowed. His face was concentrated. "I... I ain't gonna... say a word."
"Good boy! That's fine, Lennie! Maybe you're gettin' better. When we get the coupla acres I can let you tend the rabbits all right. 'Specially if you remember as good as that."
After, readers are cued into the second thing that George wants Lennie to remember.
George motioned with his spoon again. "Look, Lennie. I want you to look around here. You can remember this place, can't you? The ranch is about a quarter mile up that way. Just follow the river?"
"Sure," said Lennie. "I can remember this. Di'n't I remember about not gonna say a word?"
"'Course you did. Well, look. Lennie- if you jus' happen to get in trouble like you always done before, I want you to come right here an' hide in the brush."
"Hide in the brush," said Lennie slowly.
"Hide in the brush till I come for you. Can you remember that?"
"Sure I can, George. Hide in the brush till you come."
George, fearful that Lennie may get into trouble again,like he did in Weeds, wants to make sure that Lennie remembers the plan. George knows that Lennie getting in trouble is very likely and he needs to make sure that if he and Lennie get separated Lennie knows where to go.