Deuteronomy 6:22-25

and the LORD showed signs and wonders before our eyes, great and severe, against Egypt, Pharaoh, and all his household. Then He brought us out from there, that He might bring us in, to give us the land of which He swore to our fathers. And the LORD commanded us to observe all these statutes, to fear the LORD our God, for our good always, that He might preserve us alive, as it is this day. Then it will be righteousness for us, if we are careful to observe all these commandments before the LORD our God, as He has commanded us.’