Just as Abraham believed God, and it was credited to him as righteousness, [as conformity to God’s will and purpose—so it is with you also].

So understand that it is the people who live by faith [with confidence in the power and goodness of God] who are [the true] sons of Abraham.

The Scripture, foreseeing that God would justify the Gentiles by faith, proclaimed the good news [of the Savior] to Abraham in advance [with this promise], saying, “In you shall all the nations be blessed.”

So then those who are people of faith [whether Jew or Gentile] are blessed and favored by God [and declared free of the guilt of sin and its penalty, and placed in right standing with Him] along with Abraham, the believer.

in order that in Christ Jesus the blessing of Abraham might also come to the Gentiles, so that we would all receive [the realization of] the promise of the [Holy] Spirit through faith.

Now the promises [in the covenants] were decreed to Abraham and to his seed. God does not say, “And to seeds (descendants, heirs),” as if [referring] to many [persons], but as to one, “And to your Seed,” who is [none other than] Christ.

For if the inheritance [of what was promised] is based on [observing] the Law [as these false teachers claim], it is no longer based on a promise; however, God granted it to Abraham [as a gift] by virtue of His promise.

Now the mediator or go-between [in a transaction] is not [needed] for just one party; whereas God is only one [and was the only One giving the promise to Abraham, but the Law was a contract between two, God and Israel; its validity depended on both].

And if you belong to Christ [if you are in Him], then you are Abraham’s descendants, and [spiritual] heirs according to [God’s] promise.

For it is written that Abraham had two sons, one by the slave woman [Hagar] and one by the free woman [Sarah].