Look, there is a little thing in the Bible, of which most people are unaware. And that little thing is God's Eternal Purpose.
God has a purpose, and it is related to the destruction of Satan's Kingdom and even more so, of Satan Himself. Look at 1 John 3:8, the latter part of that verse,
"For this purpose the Son of God was manifested, that he might destroy the works of the devil." This is why God came to be incarnated in Jesus Christ, so that,
"...To the intent that now unto the principalities and powers in heavenly places might be known by the church the manifold wisdom of God, According to the eternal purpose which he purposed in Christ Jesus our Lord". Eph. 3:11.
God's purpose will be wrought in this universe through the church, the body of Christ (and only in that way). It is there His Eternal Purpose lies. It is that from which we derive predestination, or election.
And not only so, but God's Purpose in Jesus is to destroy the very PERSON of the devil,
"Forasmuch then as the children are partakers of flesh and blood, he also himself likewise took part of the same; that through death he might DESTROY HIM that had the power of death, that is, the devil; And deliver them who through fear of death were all their lifetime subject to bondage." Hebrews 2:14.
And not only to destroy the devil, but the death the devil brings to mankind as well.
God can not only give life, but can destroy life as well. But the devil's sole product, the single thing he can do in the universe, is to bring death...He does that through lies, the world about us, temptation, sin, and the entire list of the works of the flesh. This world IN WHICH WE LIVE lies in the devil, "and the whole world lieth in wickedness" 1 John 5:19.
I've known the devil for over 64 years of my life. And to this day, try as I might, I've NEVER managed to found one good, life giving thing the devil has done for me...Satan is incapable of giving life, and will one day himself, be cast into the lake of fire (where he will be joined by those who do not know Jesus Christ).
God's eternal purpose, and the reason for which Jesus came, is to destroy the works of the devil and ultimately the devil, Satan, himself.
So what has that to do with God loving Jacob and hating Esau?
It is simply because God, in His foreknowledge and omnipotence knows WHO WILL BE USEFUL TO HIM IN EXECUTING HIS ETERNAL PURPOSE. Who will be useful in building the Kingdom of God here on earth...THAT'S why God hated Esau and loved Jacob. It was through Jacob that God could and did bring to mankind the nation of Israel, and through Israel, the Son of God...who is still fully engaged in bringing about God's Eternal Purpose.
Look at any and all 'predestination' verses throughout the New Testament, and every single one of them will be accompanied by a phrase speaking of God's Eternal Purpose. Let's see just a precious few of them...
"And we know that all things work together for good to them that love God, to them who are the called according to his purpose. For whom he did foreknow, he also did predestinate to be conformed to the image of his Son, that he might be the firstborn among many brethren." Romans 8:28-29.
If things aren't going well, or 'good' for you nowadays...check really close and you'll find it is because you aren't engaged in helping to bring about God's Kingdom on earth. It is that you are not working and holding on to seeing God's Eternal Purpose brought about.
"Who hath saved us, and called us with an holy calling, not according to our works, but according to his own purpose and grace, which was given us in Christ Jesus before the world began, But is now made manifest by the appearing of our Saviour Jesus Christ, who hath abolished death, and hath brought life and immortality to light through the gospel..." 2 Tim 3:9-10
Note that 'his own purpose and grace" are brought about in order to 'abolish death' (destroying Satan and Satan's work, death) and to bring life. Again, Satan can bring and give only death...God can bring and give both life and death. Who better then to serve, than God?
"...having predestinated us unto the adoption of children by Jesus Christ to himself, according to the good pleasure of his will, To the praise of the glory of his grace, wherein he hath made us accepted in the beloved. In whom we have redemption through his blood, the forgiveness of sins, according to the riches of his grace; Wherein he hath abounded toward us in all wisdom and prudence; Having made known unto us the mystery of his will, according to his good pleasure which he hath purposed in himself: That in the dispensation of the fulness of times he might gather together in one all things in Christ, both which are in heaven, and which are on earth; even in him: In whom also we have obtained an inheritance, being predestinated according to the purpose of him who worketh all things after the counsel of his own will..." Eph 1:5-11.
Yes, it is a long passage, but filled with truth. The salient points might be, 1) we are predestined to be children, Sons of God, 2) and that is His will. 3) So that all we have that might be called 'life', we have through Him and Him alone, 4) even to the point that some of us have been vouchsafed with an understanding of the 'mystery of His will', 5: and that too, is according to his good pleasure, and that according to His Purpose. 6) and it is through and by Him that we have been predestinated and given an eternal inheritance of life...
And 7) ALL OF THAT has been done according to His Purpose, and as always, 'after His own will'.
Esau was not fit, not able to play the kind of role in God's Eternal Purpose that Jacob could and did play. This same dynamic works in the world today. God still has His Eternal Purpose, God still predestinates and rewards those people who He knows will serve Him well in God's Eternal Purpose...
And your homework Dear Friends, your task, should you decide to accept it, is to tell us,
"Why did and does God need an Eternal Purpose"...
God Bless you in His Purpose!
I am and remain sincerely yours in Jesus Christ,