Deuteronomy 11:29-30

“When the LORD your God brings you into the land and helps you take possession of it, you must pronounce the blessing at Mount Gerizim and the curse at Mount Ebal. (These two mountains are west of the Jordan River in the land of the Canaanites who live in the Jordan Valley, near the town of Gilgal, not far from the oaks of Moreh.)