Deuteronomy 11:27-29

Darby Translation

²⁷ a blessing, if ye obey the commandments of Jehovah your God, which I command you this day;

²⁸ and a curse, if ye will not obey 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.

²⁹ And it shall come to pass, when Jehovah thy God hath brought thee into the land whither thou enterest in to possess it, that thou shalt put the blessing upon mount Gerizim, and the curse upon mount Ebal.