Numbers 13:31-33
13:31 But the men who had gone up with him said, “We are not able to go up against these people, because they are stronger than we are!”
13:32 Then they presented the Israelites with a discouraging report of the land they had investigated, saying, “The land that we passed through to investigate is a land that devours its inhabitants. All the people we saw there are of great stature.
13:33 We even saw the Nephilim there (the descendants of Anak came from the Nephilim), and we seemed liked grasshoppers both to ourselves and to them.”