Contrary to popular myths, the Bible is clear that the Nephilim bullies were already among the ungodly “sons of men” before the godly “sons of God” abandoned their pursuit of godliness to marry the ungodly “daughters of men” and gave birth to an apostate evil generation of heroic Gibborim who prided in perpetrating unrestrained wickedness.
(4) There were giants[NEPHILIM] in the earth in those days; and also after that, when the sons of God came in unto the daughters of men, and they bare children to them, the same became mighty men[GIBBORIM] which were of old, men of renown.
(5) And GOD saw that the wickedness of man was great in the earth, and that every imagination of the thoughts of his heart was only evil continually.
THE SONS OF GOD who married and had offspring renowned for wickedness which led to the Deluge cannot be angels as some curious persons erroneously mythologize. These antediluvian ‘sons of God’ were godly full humans belonging to the Sethite Church of Enosh-Enoch movements (Gen 4:26; 5:24). The Church then was called the Bene-ha-Elohim, just as the Church of today is called Sons or Children of God (John 1:12; Rom 8:14-16; 2Cor 6:16; Gal 3:26; 4:5-6; Eph 1:5; 1John 3:1).