And there are three that bear witness in earth, the Spirit, and the water, and the blood: and these three agree in one.1 John 5:8 (water=the Word; the blood brings us the grace of the gift of righteousness).
All three should agree as we follow the life and peace of the Spirit.
I'm not sure I see Nephilim re-appearing in scripture in the last days. I do see in scripture, especially after the rapture, the very swift ("swift" symbolized by the four horses) rise of Worldwide Jihad and Islamic Supremacy and lots of blood and beheadings ("sickle" = Islamic "sword"). I think the beast (the "12th Imam" Islam is waiting for) is an Assyrian.
Not sure Satan needs Nephilim when he's got the Islamocrazies doing his bidding.
A variation of this theme is a bit different, excluding the Nephilim role.
The Luciferians running our politics and our economy apparently believe they’re descended straight from Satan through Cain.
One interpretation holds that these descendants survived either through Noah’s wife or through one or more of his son’s wives.