This is because the Lord your God is kind and good. He will not leave you or kill you. He will not forget the promise that he made to your ancestors This is a serious promise and God will not forget it.
Deuteronomy 4:31
耶和華－你上帝原是有憐憫的上帝；他總不撇下你，不滅絕你，也不忘記他起誓與你列祖所立的約。 申命記 4:31