Numbers 13:27-31

They reported to Moses and said, “We went in to the land where you sent us; and it certainly does flow with milk and honey, and this is its fruit. But the people who live in the land are strong, and the cities are fortified (walled) and very large; moreover, we saw there the descendants of Anak [people of great stature and courage]. [The people descended from] Amalek live in the land of the Negev (South country); the Hittite, the Jebusite, and the Amorite live in the hill country; and the Canaanites live by the [Dead] Sea and along the side of the Jordan.” Then Caleb quieted the people before Moses, and said, “Let us go up at once and take possession of it; for we will certainly conquer it.” But the men who had gone up with him said, “We are not able to go up against the people [of Canaan], for they are too strong for us.”