Paul, an apostle (not commissioned and sent from men nor through the agency of man, but through Jesus Christ—the Messiah—and God the Father, who raised Him from the dead),

[It also comes from] all of the brothers who are with me [and is being sent] to the churches of Galatia [i.e., Iconium, Derbe, Lystra and Antioch of Pisidia].

Neither went I up to Jerusalem to them sent before me; but I went away to Arabia, and again returned to Damascus.

(It was in consequence of a revelation that I went up at all.) I submitted the gospel I am in the habit of preaching to the Gentiles, submitting it privately to the authorities, to make sure that my course of action would be and had been sound.

And the Scripture, foreseeing that in consequence of faith God would declare the nations to be free from guilt, sent beforehand the Good News to Abraham, saying, "In you all the nations shall be blessed."

But when the fulness of the time was come, God sent forth his Son, made of a woman, made under the law,

And because ye are sons, God hath sent forth the Spirit of his Son into your hearts, crying, Abba, Father.

But what does the Scripture say?

“Cast out the bondwoman [Hagar] and her son [Ishmael],
For never shall the son of the bondwoman be heir and share the inheritance with the son of the free woman.”