The “sons of God” were men who had the Spirit of God within them as compared to the rest of the world which didn’t (the natural man).
There were 2 types of people in the world (as today also): those that have the Spirit of God dwelling within them and those natural men of the world who do not have this.
The fleshly mind of those of the world are not subject to the law of God (because they do not have His Spirit dwelling within them). They cannot be subject to it without His Spirit within them. They do not delight in His commands and cannot as it is the Spirit within us that gives us the willingness and ability to do them. We delight in His commands while the world (the natural men) does not.
Romans 8:6-9 KJV (6) For to be carnally minded is death; but to be spiritually minded is life and peace. (7) Because the carnal mind is
enmity against God: for it is not subject to the law of God, neither
indeed can be. (8) So then they that are in the flesh cannot please
God. (9) But ye are not in the flesh, but in the Spirit, if so be
that the Spirit of God dwell in you. Now if any man have not the
Spirit of Christ, he is none of his.
The Spirit of God strived within those sons of God as these men did not always live according to His Spirit but instead continuously lived after the flesh: “he is also flesh”…that is, these men continuously lived after the flesh and not after His Spirit.
Genesis 6:3 KJV (3) And the LORD said, My spirit shall not always strive with man, for that he also is flesh: yet his days shall be an
hundred and twenty years.
There was an internal struggle of God’s Spirit within the sons of God who were living after the flesh as every imagination of the thoughts of their heart was only evil….continually evil (even though they could have lived after the Spirit and did good).
Genesis 6:5-6 KJV (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.
They grieved His Spirit.
(6) And it repented the LORD that he had made man on the earth, and it grieved him at his heart.
But not so with “Noah” which means “rest/quiet” . The Spirit of God found “rest” within Noah as His Spirit did not struggle within him. Noah found grace in the eyes of the LORD.
Genesis 6:8 KJV (8) But Noah found grace in the eyes of the LORD.
Today, people can still “grieve” the Spirit of God by continuously living after the flesh (living in bitterness, wrath, evil speaking, etc) rather than being led with the Spirit that dwells within them.
Ephesians 4:29-32 KJV (29) Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it
may minister grace unto the hearers. (30) And grieve not the holy
Spirit of God, whereby ye are sealed unto the day of redemption. (31)
Let all bitterness, and wrath, and anger, and clamour, and evil
speaking, be put away from you, with all malice: (32) And be ye kind
one to another, tenderhearted, forgiving one another, even as God for
Christ's sake hath forgiven you.
His Spirit will not always strive with those who live after the flesh (he is also flesh) just as He did not back then for if we continue to live after the flesh, we shall die.
Romans 8:12-14 KJV (12) Therefore, brethren, we are debtors, not to the flesh, to live after the flesh.
We must (through His Spirit) mortify the deeds of the body so that we may live. His Spirit will not always strive within us....in those who continue to live after the flesh and not after His Spirit.
(13) For if ye live after the flesh, ye shall die: but if ye through the Spirit do mortify the deeds of the body, ye shall live.
The “sons of God” must put to death the deeds of the body and live after His Spirit as He will not always strive with those who do not.
(14) For as many as are led by the Spirit of God, they are the sons of God.
The Spirit strives within us if we continue to live after the flesh. There is no “rest” for His Spirit within those who continue to live after the flesh. The Spirit and flesh are contrary to one another. There is an internal struggle within between the Spirit of God and the lusts of the flesh in those who do not crucify (in Christ) the flesh with its affections and lusts.
Galatians 5:16-26 KJV (16) This I say then, Walk in the Spirit, and ye shall not fulfil the lust of the flesh. (17) For the flesh lusteth
against the Spirit, and the Spirit against the flesh: and these are
contrary the one to the other: so that ye cannot do the things that ye
would. (18) But if ye be led of the Spirit, ye are not under the law.
(19) Now the works of the flesh are manifest, which are these;
Adultery, fornication, uncleanness, lasciviousness, (20) Idolatry,
witchcraft, hatred, variance, emulations, wrath, strife, seditions,
heresies, (21) Envyings, murders, drunkenness, revellings, and such
like: of the which I tell you before, as I have also told you in time
past, that they which do such things shall not inherit the kingdom of
God. (22) But the fruit of the Spirit is love, joy, peace,
longsuffering, gentleness, goodness, faith, (23) Meekness,
temperance: against such there is no law. (24) And they that are
Christ's have crucified the flesh with the affections and lusts. (25)
If we live in the Spirit, let us also walk in the Spirit. (26) Let us
not be desirous of vain glory, provoking one another, envying one
We cannot become a "friend of the world" in these things. Friendship of this world is enmity....hostility/opposition...with God. There is an internal struggle with those who have a friendship with this world.
James 4:4 KJV (4) Ye adulterers and adulteresses, know ye not that the friendship of the world is enmity with God? whosoever therefore
will be a friend of the world is the enemy of God.
That is what the "sons of God" did. They became "friends of the world" by marrying the "daughters of men"....daughters of the natural men of the world. Then there was "enmity with God" as there was a struggle of His Spirit within the sons of God who continually lived after the flesh.
Genesis 6:1-4 KJV (1) And it came to pass, when men began to multiply on the face of the earth, and daughters were born unto them,
(2) That the sons of God saw the daughters of men that they were
fair; and they took them wives of all which they chose. (3) And the
LORD said, My spirit shall not always strive with man, for that he
also is flesh: yet his days shall be an hundred and twenty years. (4)
There were giants 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 which were of old, men of
Men "marry" doctrines and commandments of men today and fight each other over them. They become friends of the world in their envy and strife as they war and fight over them in their quarreling over who is "accounted the greatest" among them. They behave just like the world who also fights and wars over their laws, constitutions, governments, etc (laws made by natural men who do not have the Spirit). The handwriting of "ordinances" (various church dogmas) are contrary to us getting along with one another as many fight over their respective "handwritings" which are patterned after the world. They are against us. Fortunately, the Lord forgives us as those handwritings are nailed to His cross.
Colossians 2:13-15 KJV (13) And you, being dead in your sins and the uncircumcision of your flesh, hath he quickened together with him,
having forgiven you all trespasses; (14) Blotting out the handwriting
of ordinances that was against us, which was contrary to us, and took
it out of the way, nailing it to his cross; (15) And having spoiled
principalities and powers, he made a shew of them openly, triumphing
over them in it.