Numbers 13:28-33

However, the people who dwell in the land are strong, and the cities are fortified and very large. And besides, we saw the descendants of Anak there. The Amalekites dwell in the land of the Negeb. The Hittites, the Jebusites, and the Amorites dwell in the hill country. And the Canaanites dwell by the sea, and along the Jordan.” But Caleb quieted the people before Moses and said, “Let us go up at once and occupy it, for we are well able to overcome it.” Then the men who had gone up with him said, “We are not able to go up against the people, for they are stronger than we are.” So they brought to the people of Israel a bad report of the land that they had spied out, saying, “The land, through which we have gone to spy it out, is a land that devours its inhabitants, and all the people that we saw in it are of great height. And there we saw the Nephilim (the sons of Anak, who come from the Nephilim), and we seemed to ourselves like grasshoppers, and so we seemed to them.”