I approve of their response; however, they are missing the tainted bloodline theory, which is a bit more complex. In a nutshell, we learn earlier in Genesis that certain "sons of God" (in this case, angelic beings) mated with human females and begat nephalim, some of whom were giants. These hybrid beings were the cause of much evil in the world. Some people believe the races God wanted exterminated were descendants of those hybrid beings. Some also hold that these very same hybrid beings that were not actually completely destroyed as God had commanded, are actually related to the evil cabal bloodlines we are dealing with in the Great Awakening. Crazy as it may sound, digging deep into this, I can say it explains a lot of things that have no better explanation.