The typical denominational Christian understanding of Galatians 3:16 is not only contrary to the original intent of its author, Paul of Tarsus, but it is also contrary to all of the promises of Scripture. It goes so far as to endeavor to make void all of the promises of Scripture which we see that Yahweh had made
to Abraham and to the children of Israel exclusively, in spite of Paul's actual words confirming them, but especially in spite of the words of Yahweh God Himself.
In Galatians chapter 3 Paul is explaining that the promises of Yahweh God fulfilled in Christ are indeed going to be kept according to what Yahweh had already promised to Abraham as it is recorded in Genesis, which ensured Abraham that his
seed would become many nations and as the stars of heaven, and that they would inherit the world as well as inheriting his blessing. This is what Abraham believed, so this belief alone is the “faith of Abraham”. Paul also said, in Galatians 3:15, that the covenant
could not be amended or added to. There is no man capable of adding to or amending the promises of God.
There is no changing the nature or definition of Abraham's seed, and
there is no adding to the promises of a New Covenant as they are found in Jeremiah or Ezekiel. Paul once again reinforces this statement in Galatians 3:17.
“Brothers, let me put this in human terms. Even a human covenant, once it is ratified, cannot be canceled or amended.
16The promises were spoken to Abraham and to his seed. The Scripture does not say, “and to seeds,” meaning many, but “and to your seed,”
h meaning One, who is Christ.”
Galatians 3:16
Here is the common translation which has been deceptively mistranslated and if we just use logic we know that Abraham had 7 other sons yet the promises were not made to them but “in Isaac shall thy seed be called” as meaning “one” and where they deceptively mistranslated “who is Christ” the greek word being “Christos” in context is translated “annointed” or “who is annointed”
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Now to Abraham the promises have been spoken, and to his seed. It does not say “and to seeds”, as of many; but as of one: “and to your seed,” which is anointed.
Galatians 3:16
This is a study in of itself and we can go deeper but i wanted to addresss the “one blood” quote
Not all of the oldest manuscripts even include the word “blood” but instead “from one” which denotes Adam through Noah describing the Genesis 10 table of nations.
There were also the nations not descended from Adam that settled in Canaan. Just reading the Enoch literature shows that not all races of men were born from Adam. Most of the Hamites had mingled their seed with the Hitittes and Canaanites becoming abomintions unto God which explains why the gospel was not sent there.
Jesus affirms that in the judgement those races not created of Adam woild be uprooted by the Father.
“But He answered and said, “Every plant which My heavenly Father
hath not planted shall be rooted up.”
Matthew 15:13