How long wilt thou wander about, O thou backsliding daughter? for the LORD hath created {d} a new thing in the earth, A woman shall encompass a man.

(d) Because their deliverance from Babylon was a figure of their deliverance from sin, he shows how this would be procured that is, by Jesus Christ, whom a woman would conceive and bear in her womb. Which is a strange thing in earth, because he would be born of a virgin without man or he means that Jerusalem which was like a barren woman in her captivity would be fruitful as she that is joined in marriage and whom God blesses with children.

Wesley's Notes

31:22 Backsliding - Running after idols; or seeking help from foreign nations, instead of applying to God. A woman - This seems to be a promise of the Jewish church in its time, and of the gospel - church, prevailing over all its enemies; though, considering the fewness of the church's members, with the multitude of its enemies, and their power, it seemed as strange a thing, as for a woman to prevail against a strong and mighty man.

Jamieson-Fausset-Brown Bible Commentary

22. go about-namely, after human helps (Jer 2:18, 23, 36). Why not return immediately to me? Maurer translates, as in So 5:6, "How long wilt thou withdraw thyself?" Let thy past backslidings suffice thee now that a new era approaches. What God finds fault with in them is, that they looked hither and thither, leaning on contingencies, instead of at once trusting the word of God, which promised their restoration. To assure them of this, God promises to create a new thing in their land, A woman shall compass a man. Calvin explains this: Israel, who is feeble as a woman, shall be superior to the warlike Chaldeans; the captives shall reduce their captors to captivity. Hengstenberg makes the "woman" the Jewish Church, and the "man" Jehovah, her husband, whose love she will again seek (Ho 2:6, 7). Maurer, A woman shall protect (De 32:10, Margin; Ps 32:10) a man, that is, You need fear no foes in returning, for all things shall be so peaceful that a woman would be able to take man's part, and act as his protector. But the Christian fathers (Augustine, &c.) almost unanimously interpreted it of the Virgin Mary compassing Christ in her womb. This view is favored:-(1) By the connection; it gives a reason why the exiles should desire a return to their country, namely, because Christ was conceived there. (2) The word "created" implies a divine power put forth in the creation of a body in the Virgin's womb by the Holy Ghost for the second Adam, such as was exerted in creating the first Adam (Lu 1:35; Heb 10:5). (3) The phrase, "a new thing," something unprecedented; a man whose like had never existed before, at once God and man; a mother out of the ordinary course of nature, at once mother and virgin. An extraordinary mode of generation; one conceived by the Holy Ghost without man. (4) The specification "in the land" (not "earth," as English Version), namely, of Judah, where probably Christ was conceived, in Hebron (compare Lu 1:39, 42, 44, with Jos 21:11) or else in Nazareth, "in the territory" of Israel, to whom Jer 31:5, 6, 15, 18, 21 refer; His birth was at Beth-lehem (Mic 5:2; Mt 2:5, 6). As the place of His nativity, and of His being reared (Mt 2:23), and of His preaching (Hag 2:7; Mal 3:1), are specified, so it is likely the Holy Spirit designated the place of His being conceived. (5) The Hebrew for "woman" implies an individual, as the Virgin Mary, rather than a collection of persons. (6) The restoration of Israel is grounded on God's covenant in Christ, to whom, therefore, allusion is naturally made as the foundation of Israel's hope (compare Isa 7:14). The Virgin Mary's conception of Messiah in the womb answers to the "Virgin of Israel" (therefore so called, Jer 31:21), that is, Israel and her sons at their final restoration, receiving Jesus as Messiah (Zec 12:10). (7) The reference to the conception of the child Messiah accords with the mention of the massacre of "children" referred to in Jer 31:15 (compare Mt 2:17). (8) The Hebrew for "man" is properly "mighty man," a term applied to God (De 10:17); and to Christ (Zec 13:7; compare Ps 45:3; Isa 9:6) [Calovius].

Matthew Henry's Concise Commentary

31:21-26 The way from the bondage of sin to the liberty of God's children, is a high-way. It is plain, it is safe; yet none are likely to walk in it, unless they set their hearts towards it. They are encouraged by the promise of a new, unheard-of, extraordinary thing; a creation, a work of Almighty power; the human nature of Christ, formed and prepared by the power of the Holy Ghost: and this is here mentioned as an encouragement to the Jews to return to their own land. And a comfortable prospect is given them of a happy settlement there. Godliness and honesty God has joined: let no man think to put them asunder, or to make the one atone for the want of the other. In the love and favour of God the weary soul shall find rest, and the sorrowful shall find joy. And what can we see with more satisfaction than the good of Jerusalem, and peace upon Israel?