For ye have heard of my conversation in time past in the Jews' religion, how that beyond measure I persecuted the church of God, and wasted it:

And profited in the Jews' religion above many my equals in mine own nation, being more exceedingly zealous of the traditions of my fathers.

But on the contrary, they saw that I had been entrusted with the gospel to the uncircumcised (Gentiles), just as Peter had been [entrusted to proclaim the gospel] to the circumcised (Jews);

for He who had been at work within Peter with a view to his Apostleship to the Jews had also been at work within me with a view to my Apostleship to the Gentiles--

And recognizing the grace [that God had] bestowed on me, James and Cephas (Peter) and John, who were reputed to be pillars [of the Jerusalem church], gave to me and Barnabas the right hand of fellowship, so that we could go to the Gentiles [with their blessing] and they to the circumcised (Jews).

For, before certain [leaders] came from James [i.e., Jesus' brother, a leader of the Jerusalem church, See Acts 12:17; 15:13-22], he had eaten [a social meal] with some Gentiles. But when these men came, he abruptly discontinued this practice out of fear of the circumcised ones [i.e., out of concern for what the Jews would think of him].

And the other Jews dissembled likewise with him; insomuch that Barnabas also was carried away with their dissimulation.

But when I saw that they walked not uprightly according to the truth of the gospel, I said unto Peter before them all, If thou, being a Jew, livest after the manner of Gentiles, and not as do the Jews, why compellest thou the Gentiles to live as do the Jews?

We who are Jews by nature, and not sinners of the Gentiles,

Before this faith came, we Jews were perpetual prisoners under the Law, living under restraints and limitations in preparation for the faith which was soon to be revealed.

with the result that the Law has become our tutor and our disciplinarian to guide us to Christ, so that we may be justified [that is, declared free of the guilt of sin and its penalty, and placed in right standing with God] by faith.

[In this relationship] there is to be no [distinction between] Jews or Greeks [i.e., Gentiles], slaves or free persons, men or women; for all of you are united into one [body] because of your relationship with Christ Jesus.

So also, when we [Jews] were like children, we were under bondage to the basic worldly rules [of the law of Moses].

But, just as it was then --- the son born in the ordinary way [i.e., Ishmael] persecuting the one born according to the Holy Spirit's [leading, i.e., Isaac] --- so it is now [i.e., Jews urging compliance with the requirements of the law of Moses persecuting those who refuse to return to dependance on that law for salvation. See 3:1-3].

And I, brethren, if I still preach circumcision, why am I still persecuted by the Jews? for then the offence of the cross is ceased.

For even the circumcised [Jews] themselves do not [really] keep the Law, but they want to have you circumcised so that they may boast in your flesh [that is, in the fact that they convinced you to be circumcised].