Numbers 13:31

28 But the people living in the land are strong, and the towns are walled and very great; further, we saw the children of Anak there.

29 And the Amalekites are in the South; and the Hittites and the Jebusites and the Amorites are living in the hill-country; and the Canaanites by the sea and by the side of Jordan.

30 Then Caleb made signs to the people to keep quiet, and said to Moses, Let us go up straight away and take this land; for we are well able to overcome it.

31 But 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.

32 And they gave the children of Israel a bad account of the land they had been to see, saying, This land through which we went is a land causing destruction to those living in it; and all the people we saw there are men of more than common size.

33 There we saw those great men, the sons of Anak, offspring of the Nephilim: and we seemed to ourselves no more than insects, and so we seemed to them.