The old law was bondage:
Gal 3:21 Is the law then against the promises of God? God forbid: for if there had been a law given which could have given life, verily righteousness should have been by the law.
Gal 3:22 But the scripture hath concluded all under sin, that the promise by faith of Jesus Christ might be given to them that believe.
Gal 3:23 But before faith came, we were kept under the law, shut up unto the faith which should afterwards be revealed.
Before faith, Jews such as Paul were under the law.
Gal 3:24 Wherefore the law was our schoolmaster to bring us unto Christ, that we might be justified by faith.
Gal 3:25 But after that faith is come, we are no longer under a schoolmaster.
But Jews that received that faith are no longer under the law!
Gal 3:26 For ye are all the children of God by faith in Christ Jesus.
Gal 3:27 For as many of you as have been baptized into Christ have put on Christ.
Gal 3:28 There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus.
Gal 3:29 And if ye be Christ's, then are ye Abraham's seed, and heirs according to the promise.
And here we have it. This is applied to all, whether Jew or not because all are one in Christ and thus all who receive the faith and have put on Christ should not be under the law any further, as Paul was no longer.
Gal 4:9 But now, after that ye have known God, or rather are known of God, how turn ye again to the weak and beggarly elements, whereunto ye desire again to be in bondage?
Gal 4:10 Ye observe days, and months, and times, and years.
Gal 4:11 I am afraid of you, lest I have bestowed upon you labour in vain.
Gal 4:12 Brethren, I beseech you, be as I am; for I am as ye are: ye have not injured me at all.
Gal 4:13 Ye know how through infirmity of the flesh I preached the gospel unto you at the first.
Gal 4:14 And my temptation which was in my flesh ye despised not, nor rejected; but received me as an angel of God, even as Christ Jesus.
Gal 4:15 Where is then the blessedness ye spake of? for I bear you record, that, if it had been possible, ye would have plucked out your own eyes, and have given them to me.
Gal 4:16 Am I therefore become your enemy, because I tell you the truth?
Gal 4:17 They zealously affect you, but not well; yea, they would exclude you, that ye might affect them.
Gal 4:18 But it is good to be zealously affected always in a good thing, and not only when I am present with you.
Gal 4:19 My little children, of whom I travail in birth again until Christ be formed in you,
Gal 4:20 I desire to be present with you now, and to change my voice; for I stand in doubt of you.
Gal 4:21 Tell me, ye that desire to be under the law, do ye not hear the law?
The subject of these verses is the law.
Gal 4:22 For it is written, that Abraham had two sons, the one by a bondmaid, the other by a freewoman.
Gal 4:23 But he who was of the bondwoman was born after the flesh; but he of the freewoman was by promise.
Gal 4:24 Which things are an allegory: for these are the two covenants; the one from the mount Sinai, which gendereth to bondage, which is Agar.
What came at Sinai? The law! And the law came as part of the Sinai Covenant! And that covenant which contained the law "gendereth to bondage" which means to "create bondage".
Gal 4:25 For this Agar is mount Sinai in Arabia, and answereth to Jerusalem which now is, and is in bondage with her children.
Gal 4:26 But Jerusalem which is above is free, which is the mother of us all.
Gal 4:27 For it is written, Rejoice, thou barren that bearest not; break forth and cry, thou that travailest not: for the desolate hath many more children than she which hath an husband.
Gal 4:28 Now we, brethren, as Isaac was, are the children of promise.
Gal 4:29 But as then he that was born after the flesh persecuted him that was born after the Spirit, even so it is now.
Gal 4:30 Nevertheless what saith the scripture? Cast out the bondwoman and her son: for the son of the bondwoman shall not be heir with the son of the freewoman.
Gal 4:31 So then, brethren, we are not children of the bondwoman, but of the free.
And thus we should be free and not be put in bondage by the old covenant and the law. Sin isn't even mentioned here so we cannot replace the law and the covenant with "sin" and alter Paul's concise words, context nor subject.
I know it's hard, maybe even impossible for some to accept this but it's in black and white.
Gal_4:16 Am I therefore become your enemy, because I tell you the truth?
He says this because what he is talking about made him many enemies but it was only the truth.
Rom_10:4 For Christ is the end of the law for righteousness to every one that believeth.