Numbers 13:31-35

But the men who had gone up with him said, “We are not able to go up against the people, because they are too strong for us.”

So they brought a bad report of the land which they had spied out to the sons of Israel, saying, “The land through which we have gone to spy out is a land that devours its inhabitants; and all the people whom we saw in it are people of great stature.

We also saw the Nephilim there (the sons of Anak are part of the Nephilim); and we were like grasshoppers in our own sight, and so we were in their sight.”