GEN 3:14 And the Lord God said unto the serpent, Because thou hast done this, thou art cursed above all cattle, and above every beast of the field; upon thy belly shalt thou go, and dust shalt thou eat all the days of thy life:
15 And I will put enmity between thee and the woman, and between thy seed and her seed; it shall bruise thy head, and thou shalt bruise his heel.
Some have suggested God Loves everyone.Others believe God has a special saving love for His elect.
We know God is good to all men;
mt545 That ye may be the children of your Father which is in heaven: for he maketh his sun to rise on the evil and on the good, and sendeth rain on the just and on the unjust.
However, Romans 5 tells us where the love of God is
5 And hope maketh not ashamed; because the love of God is shed abroad in our hearts by the Holy Ghost which is given unto us.
The seed of the serpent does not have the Spirit, so...
You are assuming the seed of Eve were humans. It is “the Word”
You are assuming the seed of the serpent are humans. It is enmity against the Word.
See this from our Lord:
Woe to you, scribes and Pharisees, hypocrites! For you build the tombs of the prophets and adorn the monuments of the righteous, and say, ‘If we had been livingin the days of our fathers, we would not have been partners with them in shedding the blood of the prophets.” So you testify against yourselves, that you are sons of those who murdered the prophets. Fill up, then, the measure of the guilt of your fathers. You serpents, you brood of vipers, how will you escape the sentence of hell?
How does one answer the question Christ ask?
Believe.
All are condemned unless they believe.
What your attempt seems to be is that the Eve “seed” are humans destined to be saved. That isn’t necessarily consistent for Eve had many more than three children. Only three are named, and not all three were good. Eve could not produce both that salted and unsalted.
Seed in Scripture is that sown that grows and controls the core soul of humankind.
The seed of serpent sown grows enmity against the seed of salvation (the Word - Christ).
The seed of the Word growing in the prepared soul grows to harvest.
The human is not the seed.
The human is leftover dirt, dust. Not seed.
A little bit about the Love of God.
First, “God is Love.” Humankind created in the image of God did not loose the attribute of Love, but such love as God became as fallen as the rest of God’s “image.” Humankind can still love, but not in the fullness nor expression as God does.
Second, God’s loved the of world (creation) is not a limited Love. As a result, He demonstrated His love while the creation could not.
Third, that demonstration was not limited to only believers, for the seed is scattered not just on the prepared dirt.
Fourth, the owner of the creation purposes the dirt, and all creation displays His glory.
Fifth, God’s unlimited love does not make salvation unlimited, that is a false concept and denies the principle statement, God is Love.
Sixth, God’s Love is displayed in what is prepared when this creation passes away. God prepared a place for the fallen to suit their animosity just as He prepares a place for the redeemed.
God’s Love is consistent in giving what we all deserve.