Deuteronomy 31:3-5

American Standard Version

³ Jehovah thy God, he will go over before thee; he will destroy these nations from before thee, and thou shalt dispossess them: and Joshua, he shall go over before thee, as Jehovah hath spoken. ⁴ And Jehovah will do unto them as he did to Sihon and to Og, the kings of the Amorites, and unto their land; whom he destroyed. ⁵ And Jehovah will deliver them up before you, and ye shall do unto them according unto all the commandment which I have commanded you.