There have been several suggestions as to who the sons of God were and why the children they had with daughters of men grew into a race of giants (that is what the word Nephilim seems to indicate).
Kumekuwa na mapendekezo mengi kuwa ni nani hawa wana wa Mungu na ni kwa nini watoto waliozaa na binti za wanadamu walikua na kuwa kizazi cha majitu (hili ndilo neno Nephilim laoneka kuashiria)