Deu 4:39-40
By this the Israelites were to know and lay it to heart, that Jehovah alone was God in heaven and on earth, and were to keep His commandments, in order that (אשׁר) it might be well with them and their descendants, and they might have long life in Canaan. כּל־היּמים, “all time,” for all the future (cf. Exo 20:12).