Numbers 13:31-33

31 But the men who went up with him said, We aren't able to go up against the people; for they are stronger than we.  32 They brought up an evil report of the land which they had spied out to the children of Israel, saying, The land, through which we have gone to spy it out, is a land that eats up the inhabitants of it; and all the people who we saw in it are men of great stature.  33 There we saw the Nephilim, the sons of Anak, who come of the Nephilim: and we were in our own sight as grasshoppers, and so we were in their sight.