Deuteronomy 11:26-30

26Behold, I set before you this day a blessing and a curse;

27the blessing, if ye shall hearken unto the commandments of the LORD your God, which I command you this day:

28and the curse, if ye shall not hearken unto the commandments of the LORD your God, but turn aside out of the way which I command you this day, to go after other gods, which ye have not known.

29And it shall come to pass, when the LORD thy God shall bring thee into the land whither thou goest to possess it, that thou shalt set the blessing upon mount Gerizim, and the curse upon mount Ebal.

30Are they not beyond Jordan, behind the way of the going down of the sun, in the land of the Canaanites which dwell in the Arabah, over against Gilgal, beside the oaks of Moreh?