Genesis 6:4

There were giants in the earth. These “giants,” nephilim, were not the product of mixed marriages, as some have suggested. The LXX translated nephilim by gigantes, from which the English “giant” is derived. In Num. 13:33 the Israelites reported that they felt like mere grasshoppers in the sight of the nephilim, which the KJV translates “giants.” There is reason to believe that this Hebrew word may come from the root napal, and that the nephilim were “violent” ones, or terrorists, rather than physical “giants.” Since in those days the entire human race was of great stature, it must be that character rather than height is designated. The antediluvians generally possessed great physical and mental strength. These individuals, renowned for wisdom and skill, persistently devoted their intellectual and physical powers to the gratification of their own pride and passions and to the oppression of their fellow men (PP 80, 84, 90).