Bamidbar 13:30-33

And Kalev silenced HaAm before Moshe, and said, Let us go up at once, and take possession of it; for we are well able to overcome it. But the anashim that went up with him said, We are not able to go up against the people; for they are chazak (stronger) than we. And they spread an evil report of HaAretz which they had explored unto the Bnei Yisroel, saying, HaAretz, through which we have gone to explore it, is a land that eateth up the inhabitants thereof; and all the people that we saw in it are men of a great stature. And there we saw the Nephilim, the Bnei Anak, which come of the Nephilim; and we were in our own sight as grasshoppers, and so we were in their sight.