“Before she was in labor, she gave birth; before she was in pain, she delivered a boy.
The prophet, having denounced God's judgments against a hypocritical nation, that made a jest of God's word and would not answer him when he called to them, here turns his speech to those that trembled at his word, to comfort and encourage them; they shall not be involved in the judgments that are coming upon their unbelieving nation.
Commenting on Isaiah 66:5-14
Before she travailed, she brought forth,.... That is, Zion, as appears from the following verse: lest it should be thought that the interest of Christ would be swallowed up and lost in the destruction of the Jews, this, and what follows, are said concerning the conversion of many of that people, both in the first times of the Gospel, and in the latter day, as...
she--Zion. Before . . . travailed . . . brought forth--The accession of numbers, and of prosperity to her, shall be sudden beyond all expectation and unattended with painful effort (Isa 54:1, Isa 54:4-5). Contrast with this case of the future Jewish Church the travail-pains of the Christian Church in bringing forth "a man child" (Rev 12:2, Rev 12:5).