Genesis 26:16

And Abimelech said unto Isaac, Go from us; for thou art much mightier than we.

Geneva Bible - Then Abimelech said unto Isaac, Get thee from us, for thou art mightier than
we a great deal.

Genesis 6:4

There were giants [Hebrew: Nephilim, might or fallen ones] in the earth in those days; and also after that, when the sons of God came in unto the  daughters of men, and they bare [children] to them, the same [became] mighty men which [were] of old, men of renown.


Note:  Nephilim refer's to the fallen angels (see http://www.jewishencyclopedia.com/articles/11442-nephilim)