Deuteronomy 11:26-29

Behold, I set before you this day a blessing and a curse: the blessing, if ye shall hearken unto the commandments of Jehovah your God, which I command you this day; and the curse, if ye shall not hearken unto the commandments of Jehovah 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. And it shall come to pass, when Jehovah 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.