26 Therefore, if an uncircumcised man keeps the righteous requirements of the law, will not his uncircumcision be counted as circumcision? 27 And will not the physically uncircumcised, if he fulfills the law, judge you who, even with your written code and circumcision, are a transgressor of the law?
2:26
Therefore,
The opposite of verse 25 is also true. This verse (26) is an inference from verse 25.
if [hypothetical] an uncircumcised [Gentile] man keeps [observes] the righteous [just] requirements [precepts] of the law,
“If”— This verse is a hypothetical calculation. One scheme flows from the other; if circumcision is in itself nothing, its existence does not save, and its absence does not invalidate salvation. Gentile keeping of the requirements of the law was a hypothetical case (third-class condition in Greek). Although Gentiles were outside the pale of God’s covenant, they came to the truth found in it. There was, therefore, insufficiency in the badge of circumcision.
The word “requirements” or precepts is what the Bible prescribes as right. The argument is not that the Gentiles should keep the law; it is merely hypothetical and designed to demonstrate that everything depends on the application of God’s revelation to experience. That is, the “law” here refers to Scripture in general. Circumcision can never justify or condemn.
The point of verse 26 is to show that the inconsistency of the Jew in not keeping the principles of Scripture is the counterpoint to the Gentiles who keep those principles. He argued this further in the next verse.
will not his uncircumcision be counted [calculated] as circumcision?
God will calculate or regard Gentiles as though they were circumcised if they apply truth to experience. Under this hypothesis, uncircumcision is hypothetically regarded through consistent argument as circumcision.
2:27
And will not the physically uncircumcised, if he fulfills [bring to an end] the law [Scripture], judge you who, even with your written code [the Bible] and circumcision, are a transgressor of the law?
This verse answers the hypothesis of the previous verse, that uncircumcision will hypothetically be regarded as circumcision. This is an argument of consistency.
The Gentile who is faithful to Scripture by applying it condemns the religious, self-righteous Jew who preaches “written” Scripture and was ritually circumcised but does not apply it on a personal level.
The argument is that neither of the two grounds of salvation is an adequate basis of confidence before God. The following verses show that it is the reality of what one believes about God that determines a person’s relationship with God.
The next verse shows why (“for”) circumcision did not make one right with God. Circumcision was a badge or symbol, and that was all it was—just like baptism is a badge and that is all it is. A wedding ring is a symbol of marriage; it is not marriage itself.
PRINCIPLE:
The true ground of salvation is faith in the finished work of Christ on the cross.
APPLICATION:
If a person attempts justification before God by works, he violates the finished work of Christ on the cross:
Ga 2:21, I do not set aside the grace of God; for if righteousness comes through the law, then Christ died in vain.
If we try to live up to the law, we must do so perfectly without a single failure. Galatians chapter five argues that if we attempt this, God obligates us to keep the “whole law” without fail:
Ga 5:3, And I testify again to every man who becomes circumcised that he is a debtor to keep the whole law.

Mr. Grant, I’ve seen some people who differentiate between the Mosaic Law and Good Deeds — They say, Good deeds is required for eternal life even though they’re saved by Grace thru Faith.
They say the Mosaic Law won’t get you into heaven, but Good deeds is required for heaven.
So, my questions here are…
Is it biblical to conflate Mosaic Law with Good deeds, per se?
…Or are they different?
I’d be glad to read an article based on this matter!
Mike, thanks again for your post.
To add anything to by grace alone, by faith alone is heresy. Note this study: https://versebyversecommentary.com/2013/08/10/romans-116/ and this one: https://versebyversecommentary.com/2011/05/10/romans-45/ A person has to stop working to be saved because he is adding something to the finished work of Christ. To add anything to the work of Christ is to “set aside” the work of Christ: https://versebyversecommentary.com/2000/01/24/galatians-221/ It is like saying, “Move over Jesus on the cross because you did not do a sufficient job in dying for my sins, I have to add my works to your incomplete work.”
I appreciate you, Mr. Grant. That was really helpful. Not by Law, Nor by Works. All I just have to do is to glorify him, with my life. God is grace. Why won’t I run to His throne after hearing this?
You have been a blessing to me. Want to let you know that I am copying your commentary principles and applications into my Docs. GOD BLESS!
Mike, feel free to copy the material. The only thing I would ask is that you not sell the material for profit. However, feel free to charge for printing and mailing.
Yessir! It’s for personal use