Deuteronomy 6:22-25

and the LORD shewed signs and wonders, great and sore, upon Egypt, upon Pharaoh, and upon all his household, before our eyes: and he brought us out from thence, that he might bring us in, to give us the land which he sware unto our fathers. And the LORD commanded us to do all these statutes, to fear the LORD our God, for our good always, that he might preserve us alive, as it is at this day. And it shall be our righteousness, if we observe to do all these commandments before the LORD our God, as he hath commanded us.