Don't fail him or he will drive you out just as he drove out the Canaanites. That's a theme in Deuteronomy.

不要让他失望，否则他也会驱逐你,就如同他驱逐迦南人，这是《申命记》的一个主题。

耶鲁公开课 - 旧约导论课程节选

I don't want you to get all frustrated and fail to show what you know, so here are a couple of tips.

我不希望你受到挫折,由于失败而不能体现你所知道的，因此这儿有一些小提示。

麻省理工公开课 - 固态化学导论课程节选