1 In time, when men began to multiply on earth, and daughters were born to them, 2 the sons of God saw that the daughters of men were attractive; and they took wives for themselves, whomever they chose. 3 ADONAI said, "My Spirit will not live in human beings forever, for they too are flesh; therefore their life span is to be 120 years." 4 The Nephilim were on the earth in those days, and also afterwards, when the sons of God came in to the daughters of men, and they bore children to them; these were the ancient heroes, men of renown.
The passage above clearly states that the offspring of the union between the "Sons of God" and earthly women, were the famed Nephilim Giants of old. These sub-humans were of extra-ordinary size as recorded in the story of Goliath, Og and others who lived in Canaan in bible days. No one can deny that Goliath was a descendant of these olden Giants, as no human being can grow to be over "six cubits and a span", which would make him over 3 meters or 9 feet tall, without the complications we see in today's modern tall men. The evidence for Giants in Canaan can be found in the book of Deuteronomy as seen below:
Deutero: 3:11 Only Og king of Bashan was left of the remnant of the Rephaites. His bed was made of iron and was more than thirteen feet long and six feet wide. It is still in Rabbah of the Ammonites.
This would imply that he was taller than Goliath at nearly 13 feet!! Everyone who has seen Angels has described them as been exceptionally tall and powerful. If the Sons of God mated with humans, then they surely would have produced children "in their own likeness", just as the Elohim did when they created Adam and Eve. The Bible cannot lie!!!!