Deuteronomy 4:39-40

39Thou shalt know therefore this day, and consider it in thy heart, that Jehovah, he is 1God in the heavens above, and on the earth beneath: [there is] none else.

40And thou shalt keep his statutes, and his commandments, which I command thee this day, that it may be well with thee and with thy sons after thee, and that thou mayest prolong thy days on the land which Jehovah thy 2God giveth thee, for ever.