God may not

Neal A. Maxwell: We should learn, too, that the prompting that goes unresponded to may not be repeated. Writing down what we have been prompted with is vital. A special thought can also be lost later in the day in the rough and tumble of life. God should not, and may not, choose to repeat the prompting if we assign what was given such a low priority as to put it aside.

(Book: "Wherefore Ye Must Press Forward," 1977, pp. 109-123)