奶奶告诉我，如果我们忘记上帝，上帝就会忘记我们。

Grandmama has told me that God forgets us if we forget Him.

youdao

如果上帝不再听你们的祷告，就会忘记你们，让你们离开了。

If God does not hear your prayers any more, He will forget you also and let you go.

youdao

我知道如果我不做一个记录我就会忘记这个想法，于是我要求借支钢笔或铅笔。

I knew that if I didn't make a note I would lose the thought so I asked to borrow a pen or pencil.

《柯林斯英汉双解大词典》

That's--if this were a scientific study, I would be instructing you to do that so you wouldn't forget anything by the end of the day.

如果进行科学研究,我就会指导你们去做这个,最后你们就不会忘记任何东西

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选