Deuteronomy 4:39

36 Out of heaven he made thee to hear his voice, that he might instruct thee; and upon earth he showed thee his great fire; and thou heardst his words from the midst of the fire.

37 And because he loved thy fathers, therefore he chose their seed after them, and brought thee out of Egypt in his sight with his mighty power.

38 To drive out nations from before thee, greater and mightier than thou [art], to bring thee in, to give thee their land [for] an inheritance, as [it is] this day.

39 Know therefore this day, and consider [it] in thy heart, that the LORD he [is] God in heaven above, and upon the earth beneath: [there is] none else.

40 Thou shalt keep therefore his statutes and his commandments which I command thee this day, that it may be well with thee, and with thy children after thee, and that thou mayest prolong [thy] days upon the earth, which the LORD thy God giveth thee, for ever.

41 Then Moses set apart three cities on the side of Jordan, towards the sun-rising;

42 That the slayer might flee thither, who should kill his neighbor unawares, and when he had not hated him in times past; and that fleeing to one of these cities he might live: