Galatians 4:21-23

Verse 21. Tell me, etc. In order to show fully the nature and the effect of the law, Paul here introduces an illustration from an important fact in the Jewish history. This allegory has given great perplexity to expositors, and, in some respects, it is attended with real difficulty. An examination of the difficulties will be found in the larger commentaries. My object, without examining the expositions which have been proposed, will be to state, in as few words as possible, the simple meaning and design of the allegory. The design it is not difficult to understand. It is to show the effect of being under the bondage or servitude of the Jewish law, compared with the freedom which the gospel imparts. Paul had addressed the Galatians as having a real desire to be under bondage, or to be servants. Gal 4:9. He had represented Christianity as a state of freedom, and Christians as the sons of God--not servants, but freemen. To show the difference of the two conditions, he appeals to two cases which would furnish a striking illustration of them. The one was the case of Hagar and her son. The effect of bondage was well illustrated there. She and her son were treated with severity, and were cast out and persecuted. This was a fair illustration of bondage under the law; of the servitude to the laws of Moses; and was a fit representation of Jerusalem as it was in the time of Paul. The other case was that of Isaac. He was the son of a free woman, and was treated accordingly. He was regarded as a son--not as a servant. And he was a fair illustration of the case of those who were made free by the gospel. They enjoyed a similar freedom and sonship, and should not seek a state of servitude or bondage. The condition of Isaac was a fit illustration of the New Jerusalem; the heavenly city; the true kingdom of God. But Paul does not mean to say, as I suppose, that the history of the son of Hagar, and of the son of Rebecca, was mere allegory, or that the narrative by Moses was designed to represent the different condition of those who were under the law and under the gospel, He uses it simply as showing the difference between servitude and freedom, and as a striking ILLUSTRATION of the nature of the bondage to the Jewish law, and of the freedom of the gospel, just as any one may use a striking historical fact to illustrate a principle. These general remarks will constitute the basis of my interpretation of this celebrated allegory. The expression "tell me," is one of affectionate remonstrance and reasoning. See Lk 7:42: "Tell me, therefore, which of these will love him most?" Comp. Isa 1:18: "Come now, and let us reason together, saith the Lord."

Ye that desire to be under the law. Gal 4:9. You who wish to yield obedience to the laws of Moses. You who maintain that conformity to those laws is necessary to justification.

Do ye not hear the law? Do you not understand what the law says? Will you not listen to its own admonitions, and the instruction which may be derived from the law on the subject? The word "law" here refers not to the commands that were uttered on Mount Sinai, but to the book of the law. The passage to which reference is made is in the book of Genesis; but all the five books of Moses were by the Jews classed under the general name of the law. Lk 24:44. The sense is, "Will you not listen to a narrative found in one of the books of the law itself, fully illustrating the nature of that servitude which you wish?"
Verse 22. For it is written. Gen 16, Gen 21.

Abraham had two sons. Ishmael and Isaac. Abraham subsequently had several sons by Keturah, after the death of Sarah, Gen 25:1-6. But the two sons by Hagar and Sarah were the most prominent, and the events of their lives furnished the particular illustration which Paul desired.

The one by a bond-maid. Ishmael, the son of Hagar. Hagar was an Egyptian slave, whom Sarah gave to Abraham in order that he might not be wholly without posterity, Gen 16:3.

The other by a free-woman. Isaac, the son of Sarah, Gen 21:1,2.

(c) "one by a bond-maid" Gen 16:15 (d) "the other" Gen 21:1,2
Verse 23. But he who was of the bond-woman was born after the flesh. In the ordinary course of nature, without any special promise, or any unusual Divine interposition, as in the case of Isaac.

But he of the free-woman, etc. The birth of Isaac was in accordance with a special promise, and by a remarkable Divine interposition. See Gen 18:10, 21:1,2, Heb 11:11,12. Comp. Rom 4:19-21. The idea here of Paul is, that the son of the slave was in a humble and inferior condition from his very birth. There was no special promise attending him. He was born into a state of inferiority and servitude, which attended him through his whole life. Isaac, however, was met with promises as soon as he was born, and was under the benefit of those promises as long as he lived. The object of Paul is to state the truth in regard to a condition of servitude and slavery. It is attended with evils from beginning to end; from the birth to the grave. By this illustration he means to show them the folly of beaming the voluntary slaves of the law after they had once been made free. (e) "bond woman" Rom 9:7,8
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