Who were the "sons of God" mentioned in Genesis 6:2?
The most likely interpretation is that these "sons of God" were angels:
"'Son of God' in the OT can refer to a 'heavenly court' of supernatural beings [angels] (Gen. 6:2, 4; Job 1:6; 2:1; 38:7; Ps. 29:1; 82:6; 89:6 ...)" - p. 571, Vol. 4, The International Standard Bible Encyclopedia, Eerdmans Publishing Co., 1988. [Bracketed information and emphasis added.]
Further supporting this is how the Bible mentions that it was disobedient angels that left their place in heaven during the time of Noah, came down to the earth, and took on fleshly bodies:
"The angels that did not keep their original position but forsook their own proper dwelling place..." (Jude 6)
Their reason for doing this is explained in the following Scripture:
“The sons of the true God began to notice the daughters of men, that they were good-looking; and they went taking wives for themselves, namely, all whom they chose.” (Genesis 6:2)
Supporting the conclusion that these were ANGELIC "sons of God" is the apostle Peter’s references to “the spirits in prison, who had once been disobedient when the patience of God was waiting in Noah’s days” (1 Pet. 3:19, 20), and to “the angels that sinned,” mentioned in connection with the “ancient world” of Noah’s time. (2 Pet. 2:4, 5)
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So if these "sons of God" were angels, and since angels are spirits, how did they produce offspring (Nephilim) in the time of Noah?
As it was briefly mentioned above, the angels must have taken on fleshly bodies in order to marry human wives and perform incarnation. That these angelic sons of God were not truly human but had materialized bodies is shown by the fact that the Flood did not destroy these angels, but they dematerialized and returned to the spirit realm. - Jude 6; Gen. 6:4; 1 Pet. 3:19, 20; 2 Pet. 2:4
In Noah’s day disobedient angels materialized, married women, fathered a hybrid generation known as Nephilim, and then dematerialized when the Flood came. (Gen. 6:1-4) However, upon returning to the spirit realm, they did not regain their lofty original position, because Jude 6 says: “The angels that did not keep their original position but forsook their own proper dwelling place he has reserved with eternal bonds under dense darkness for the judgment of the great day.” (1 Pet. 3:19, 20) So it is in this condition of dense spiritual darkness that they must now confine their operations. (2 Pet. 2:4)
After the Flood, it seems evident that they became restrained from materializing again. However, they still have great power and influence over the minds and lives of men, even having the ability to enter into and possess humans and animals, and the scriptures indicate that they also use inanimate things such as houses, fetishes, and charms. (See Mt. 12:43-45; Luke 8:27-33)
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Did Jesus materialize a human body as those angels had done long ago?
No.
The Bible very plainly shows through it's descriptive account of Jesus having ‘become flesh’ (John 1:14), and having ‘come to be out of a woman’ through his conception and birth to the Jewish virgin Mary. (Gal. 4:4; Luke 1:34-36)
Jesus did not simply materialize a human body as angels had done long ago, but was actually a ‘son of mankind’ through his human mother. (See 1 John 4:2, 3 and 2 John 7)
Because of all of these things, it is fitting for Jesus to have applied the expression "Son of Man" to himself. (John 1:51; 3:14, 15)
For more, see:
Who were the Nephilim? (Search For Bible Truths)
Angels (Search For Bible Truths)
What is an angel? (Search For Bible Truths)
Angels - Why are they referred to as male in the Bible? (Search For Bible Truths)
The most likely interpretation is that these "sons of God" were angels:
"'Son of God' in the OT can refer to a 'heavenly court' of supernatural beings [angels] (Gen. 6:2, 4; Job 1:6; 2:1; 38:7; Ps. 29:1; 82:6; 89:6 ...)" - p. 571, Vol. 4, The International Standard Bible Encyclopedia, Eerdmans Publishing Co., 1988. [Bracketed information and emphasis added.]
Further supporting this is how the Bible mentions that it was disobedient angels that left their place in heaven during the time of Noah, came down to the earth, and took on fleshly bodies:
"The angels that did not keep their original position but forsook their own proper dwelling place..." (Jude 6)
Their reason for doing this is explained in the following Scripture:
“The sons of the true God began to notice the daughters of men, that they were good-looking; and they went taking wives for themselves, namely, all whom they chose.” (Genesis 6:2)
Supporting the conclusion that these were ANGELIC "sons of God" is the apostle Peter’s references to “the spirits in prison, who had once been disobedient when the patience of God was waiting in Noah’s days” (1 Pet. 3:19, 20), and to “the angels that sinned,” mentioned in connection with the “ancient world” of Noah’s time. (2 Pet. 2:4, 5)
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So if these "sons of God" were angels, and since angels are spirits, how did they produce offspring (Nephilim) in the time of Noah?
As it was briefly mentioned above, the angels must have taken on fleshly bodies in order to marry human wives and perform incarnation. That these angelic sons of God were not truly human but had materialized bodies is shown by the fact that the Flood did not destroy these angels, but they dematerialized and returned to the spirit realm. - Jude 6; Gen. 6:4; 1 Pet. 3:19, 20; 2 Pet. 2:4
In Noah’s day disobedient angels materialized, married women, fathered a hybrid generation known as Nephilim, and then dematerialized when the Flood came. (Gen. 6:1-4) However, upon returning to the spirit realm, they did not regain their lofty original position, because Jude 6 says: “The angels that did not keep their original position but forsook their own proper dwelling place he has reserved with eternal bonds under dense darkness for the judgment of the great day.” (1 Pet. 3:19, 20) So it is in this condition of dense spiritual darkness that they must now confine their operations. (2 Pet. 2:4)
After the Flood, it seems evident that they became restrained from materializing again. However, they still have great power and influence over the minds and lives of men, even having the ability to enter into and possess humans and animals, and the scriptures indicate that they also use inanimate things such as houses, fetishes, and charms. (See Mt. 12:43-45; Luke 8:27-33)
------------------------------------------------------
Did Jesus materialize a human body as those angels had done long ago?
No.
The Bible very plainly shows through it's descriptive account of Jesus having ‘become flesh’ (John 1:14), and having ‘come to be out of a woman’ through his conception and birth to the Jewish virgin Mary. (Gal. 4:4; Luke 1:34-36)
Jesus did not simply materialize a human body as angels had done long ago, but was actually a ‘son of mankind’ through his human mother. (See 1 John 4:2, 3 and 2 John 7)
Because of all of these things, it is fitting for Jesus to have applied the expression "Son of Man" to himself. (John 1:51; 3:14, 15)
For more, see:
Who were the Nephilim? (Search For Bible Truths)
Angels (Search For Bible Truths)
What is an angel? (Search For Bible Truths)
Angels - Why are they referred to as male in the Bible? (Search For Bible Truths)