(http://www.thedivinecouncil.com/nephilim.pdf) Lots and lots of debate on who they were...see the link above for one opinion.

No the Nephilim are their offspring . The Nephilim is a child born as a result of inter-breeding between angel and human . According to the famous book of Enoch the fallen angels better known as watchers inhabited our earth and interbred with human women to produce the Nephilim a race of giants. God punished Humanity with the great flood to rid the world of these abominations as He called them. A lot of things we know now , a lot of our knowledge in the fields of medical studies, weaponary making, planting, the art of make up and more have been given to us by the watchers. The only Nephilim worthy of life was Noah in God's eyes who was instructed to build an arc and start a new civilisation.

No. There are a lot of theories about who the nephilim were. They are mentioned only once, in Genesis 6. "Now it came about, when men began to multiply on the face of the land, and daughters were born to them, that the sons of God saw that the daughters of men were beautiful; and they took wives for themselves, whomever they chose. Then the LORD said, "My Spirit shall not strive with man forever, because he also is flesh; nevertheless his days shall be one hundred and twenty years." The Nephilim were on the earth in those days, and also afterward, when the sons of God came in to the daughters of men, and they bore children to them. Those were the mighty men who were of old, men of renown." Now, how this passage has fascinated people over the centuries. People have drawn all sorts of conclusions about them: 1)that they are the children of angels and human women (con: angels don't have sex. Jesus says that) 2)that they are the descendants of the two remaining sons of Adam and Eve, Cain (, the evil one, whose female descendants are "the daughters of men") and Seth, (the better son, whose children are called "sons of God").If so, what it is saying is that both lines of Adam and Eve lapsed into sin, that neither was perfect. The truth is: we don't know for sure, and this question will not be answered until we are in Heaven. In 1 Timoth 1:4, Paul advises not to get into discussions about "endless genealogies" (an expression which means,basically, things you can keep discussing, or fighting over, but never can reach a conclusion). So it is with the Nephilim. Whoever they were, they seemed to be tall in stature, and to have had descendants who became leaders of their communities.

They are the Angel's who saw mortality and humanity sexier than divinity and omninpitence. How did heaven get too boring for a rowdy group of angels? Doesn't make sense...Why did God give Angels Penis's if they where holy and Divine? What a fucked up book

(Neph′i·lim) [Fellers; Those Who Cause [Others] to Fall Down]. This is a transliteration of the Hebrew word nephi·lim′, plural in its three occurrences in the Bible. (Ge 6:4; Nu 13:33 [twice]) It evidently stems from the causative form of the Hebrew verb na·phal′ (fall) as found, for example, in 2 Kings 3:19; 19:7. The Bible account describing Jehovah’s displeasure with men in the days of Noah before the Flood relates that “the sons of the true God” took for themselves wives from among the attractive daughters of men. It then mentions the presence of “Nephilim,” saying: “The Nephilim proved to be in the earth in those days, and also after that, when the sons of the true God continued to have relations with the daughters of men and they bore sons to them, they were the mighty ones [Heb., hag·gib·bo·rim′] who were of old, the men of fame.”—Ge 6:1-4. Identity. Bible commentators, considering verse 4, have offered several suggestions as to the identity of these Nephilim. Some have thought that the derivation of the name indicates that the Nephilim had fallen from heaven, that is, that they were ‘fallen angels’ who mated with women to produce “mighty ones . . . the men of fame.” Other scholars, focusing their attention particularly on the statement “and also after that” (vs 4), have said the Nephilim were not the ‘fallen angels’ or the “mighty ones,” since the Nephilim “proved to be in the earth in those days” before the sons of God had relations with women. These latter scholars hold the opinion that the Nephilim were simply wicked men like Cain—robbers, bullies, and tyrants who roamed the earth until they were destroyed by the Flood. Still another group, taking into consideration the context of verse 4, conclude that the Nephilim were not themselves angels, but were the hybrid offspring resulting from materialized angels having intercourse with the daughters of men. Same as “gib·bo·rim′.” Certain Bible translations adjust the location of the phrase “and also after that,” placing it near the beginning of verse 4, thus identifying the Nephilim with the “mighty ones,” the gib·bo·rim′, mentioned in the latter part of the verse. For example: “In those days, as well as afterward, there were giants [Heb., han·nephi·lim′] on the earth, who were born to the sons of the gods whenever they had intercourse with the daughters of men; these were the heroes [Heb., hag·gib·bo·rim′] who were men of note in days of old.”—Ge 6:4,. The Greek Septuagint also suggests that both the “Nephilim” and “mighty ones” are identical by using the same word gi′gan·tes (giants) to translate both expressions. Reviewing the account, we see that verses 1 to 3 tell of “the sons of the true God” taking wives and of Jehovah’s statement that he was going to end his patience with men after 120 years. Verse 4 then speaks of the Nephilim proving to be in the earth “in those days,” evidently the days when Jehovah made the statement. Then it shows that this situation continued “after that, when the sons of the true God continued to have relations with the daughters of men,” and describes in more detail the results of the union of “the sons of the true God” with women. Who were the ‘sons of God’ that fathered the Nephilim? Who were “the sons of the true God” that were involved? Were they men who were worshipers of Jehovah (as distinguished from the general run of wicked mankind), as some claim? Evidently not. The Bible implies that their marriage to the daughters of men resulted in whipping up the badness in the earth. Noah and his three sons, along with their wives, were the only ones in God’s favor and were the only ones preserved through the Deluge.—Ge 6:9; 8:15, 16; 1Pe 3:20. Hence, if these “sons of the true God” were merely men, the question arises, Why were their offspring “men of fame” more than those of the wicked, or of faithful Noah? Also, the question might be asked, Why mention their marriage to the daughters of men as something special? Marriage and childbearing had been taking place for more than 1,500 years. The sons of God mentioned at Genesis 6:2, therefore, must have been angels, spirit “sons of God.” This expression is applied to angels at Job 1:6; 38:7. This view is supported by Peter, who speaks of “the spirits in prison, who had once been disobedient when the patience of God was waiting in Noah’s days.” (1Pe 3:19, 20) Also Jude writes of “the angels that did not keep their original position but forsook their own proper dwelling place.” (Jude 6) Angels had the power to materialize in human form, and some angels did so to bring messages from God. (Ge 18:1, 2, 8, 20-22; 19:1-11; Jos 5:13-15) But heaven is the proper abode of spirit persons, and the angels there have positions of service under Jehovah. (Da 7:9, 10) To leave this abode to dwell on earth and to forsake their assigned service to have fleshly relations would be rebellion against God’s laws, and perversion. The Bible states that the disobedient angels are now “spirits in prison,” having been ‘thrown into Tartarus’ and “reserved with eternal bonds under dense darkness for the judgment of the great day.” This seems to indicate that they are greatly restricted, unable again to materialize as they did prior to the Flood.—1Pe 3:19; 2Pe 2:4; Jude 6. Increased Wickedness. “The mighty ones who were of old, the men of fame” that were produced by these marriages, were not men of fame with God, for they did not survive the Flood, as did Noah and his family. They were “Nephilim,” bullies, tyrants, who no doubt helped to make conditions worse. Their angelic fathers, knowing the construction of the human body and being able to materialize, were not creating life, but lived in these human bodies and, cohabiting with women, brought forth children. Their children, “mighty ones,” were therefore unauthorized hybrids. Apparently the Nephilim did not, in turn, have children. In Mythology. The fame and dread of the Nephilim, it appears, gave rise to many mythologies of heathen people who, after the confusion of languages at Babel, were scattered throughout the earth. Though the historical forms of the Genesis account were greatly distorted and embellished, there was a remarkable resemblance in these ancient mythologies (those of the Greeks being only one example), in which gods and goddesses mated with humans to produce superhuman heroes and fearful demigods having god-man characteristics. A Report Intended to Terrorize. The ten spies who brought back to the Israelites in the wilderness a false report on the land of Canaan declared: “All the people whom we saw in the midst of it are men of extraordinary size. And there we saw the Nephilim, the sons of Anak, who are from the Nephilim; so that we became in our own eyes like grasshoppers, and the same way we became in their eyes.” No doubt there were some large men in Canaan, as other scriptures show, but never except in this “bad report,” which was carefully couched in language designed to strike terror and cause panic among the Israelites, are they called Nephilim.—Nu 13:31-33; 14:36, 37.

1) The Bible is not a book, it is a collection of books. Those are more or less been written independently. It is like if you were asking: "Is Lord Voldemort Satan?" Further information: http://en.wikipedia.org/wiki/Bible 2) "In the texts of Ugarit, there were 70 sons of God, each one being the special deity of a particular people from whom they were descended. Some memory of this is found in Biblical texts which speak of Baal Melkart of Tyre or Chemosh of Moab. The story of the Nephilim is chronicled more fully in the Book of Enoch (part of Ethiopian biblical canon). Enoch, as well as Jubilees, connects the origin of the Nephilim with the fallen angels, and in particular with the Grigori (watchers). Samyaza, an angel of high rank, is described as leading a rebel sect of angels in a descent to earth to have sexual intercourse with human females" "According to these texts, the fallen angels who begat the Nephilim were cast into Tartarus/Gehenna, a place of 'total darkness'. However, Jubilees also states that God granted ten percent of the disembodied spirits of the Nephilim to remain after the flood, as demons, to try to lead the human race astray (through idolatry, the occult, etc.) until the final Judgment. In addition to Enoch, the Book of Jubilees (7:21-25) also states that ridding the Earth of these Nephilim was one of God's purposes for flooding the Earth in Noah's time. The Biblical reference to Noah being "perfect in his generations" may have referred to his having a clean, Nephilim-free bloodline, although it may be inferred that there was more diversity among his three daughters-in law. These works describe the Nephilim as being evil giants. There are also allusions to these descendants in the deuterocanonical books of Judith, Sirach, Baruch, 3 Maccabees, and Wisdom of Solomon. Some individuals and groups, including the Ethiopian Orthodox Church, St. Augustine, John Calvin, and the Latter-day Saints, take the view of Genesis 6:2 that the "Angels" who fathered the Nephilim referred to certain human males from the lineage of Seth, who were called sons of God probably in reference to their being formerly in a covenantal relationship with Yahweh (cf. Deuteronomy 14:1; 32:5); according to these sources, these men had begun to pursue bodily interests, and so took wives of the daughters of men, i.e., those who were descended from Cain. Not only is this unequivocally stated in Ethiopian Orthodox versions of I Enoch and Jubilees, but this is also the view presented in a few extra-Biblical, yet ancient works, particularly the Conflict of Adam and Eve with Satan. In these sources, these offspring of Seth were said to have disobeyed God, by breeding with the Cainites and producing wicked children "who were all unlike", thus angering God into bringing about the Deluge." Source and further information: http://en.wikipedia.org/wiki/Nephilim

NO. Nephilim are the bastard children of the Elohim.

Accordingly to some sources, ir was said that a third of angels were kicked out, along with Lucifer, for rebelling.