Of the readings in the
Revised Common Lectionary for 29 November 2013 (Friday before the First Sunday in Advent) I choose to reflect on Genesis 6:1-10. (I'm filling in with reflections on that portion of the lectionary that occurred before I started doing these at the start of 2014.)
The Nephilim were on the earth in those days—and also afterward Genesis 6:4a
Oh what a curse a little knowledge is! A statement I'm going to be applying to much that has been written about the Nephilim and that might well end up getting applied to me in the manner of Matthew 7:2, yet I shall risk that in this reflection.
Trying to explain how any Nephilim survived the flood to be present in the land of Canaan is one of those things much ink has been spilt over, largely to no point, and not because I hold to the flood being mythical. Even if one believes in a literal flood, there is no need to ponder overmuch on the survival of the Nephilim.
The etymology of "Nephilim" in Hebrew refers to "fallen ones". Because of its proximity to the phrase "sons of God" in Genesis 6:4, some have been led to think of fallen angels, mating with human females to beget literal giants. Yet nowhere does the Bible explicitly state that, and quite a few Jewish and Christian interpretations have the phrase "sons of God" here refer not to angels but man. After all, is not Adam referred to as the son of God in Luke 3:38? What needs to be kept in mind is that in Hebrew the "Son of ..." formulation can be used to indicate membership in a group, a fact occluded in most translations of the Bible by replacing "son of ..." with "...-ite". Thus instead of numerous mentions of the sons of Israel, we get mentions of Israelites and other groups as well.
What I think has happened is that "Nephilim" was originally used in the sense of apostates: those who had fallen away from the worship of Yahweh. Maybe its meaning went beyond that to meaning not just a rejection of Yahweh, but of all gods: atheism. In either case, its use both here and in Numbers 13:33 can be explained without any need for a miraculous survival of a race of angel-human hybrids. However, once Nephilim's original sense was lost and it became only a name, I think human inventiveness created additional myths about them as part of the general trend to blame evil not on human motivations but supernatural agencies.
Thus I shall hope for a flood of understanding that instead of drowning our modern day Nephilim, shall wash away their cynicism and let realize there is more to this world than its physical essence.