Deuteronomy 11:29, 30

When the LORD your God has brought you into the land you are entering to possess, you are to proclaim on Mount Gerizim the blessings, and on Mount Ebal the curses.

As you know, these mountains are across the Jordan, westward, toward the setting sun, near the great trees of Moreh, in the territory of those Canaanites living in the Arabah in the vicinity of Gilgal.