Isaiah 50 — The Third Servant Song and Trust in the Name

Meaning. Isaiah 50:1-11 articulates two complementary movements. The first (vv.1-3) is a juridical reply: against those who complain of having been abandoned, the divine voice denies the existence of a «bill of divorce» (sèfer keritùt) and of a creditor to whom mother Zion would have been sold. The exile is not proof that the divine hand has grown short, but the consequence of the people's iniquity. The second movement (vv.4-9) is the third Servant Song: a figure who receives a «tongue of disciples» (leshòn limmudìm), an ear opened every morning, and who offers his back to the blows without hiding his face from the spitting, trusting in the one who «vindicates» him (matzdiqì) within a forensic framework. The final diptych (vv.10-11) contrasts trust in the Name on the part of one who walks in darkness with the self-illumination of those who kindle their own fire and are burned by it.

Historical Reconstruction

The chapter belongs to the consolatory section of the second part of the book (chs. 40-55), addressed most likely to a community living through the experience of the Babylonian exile and interpreting its bewilderment. The matrimonial and commercial metaphor of vv.1-2 draws on Israelite family law: the sèfer keritùt is the document that, according to Deuteronomy 24:1.3, formalizes divorce; the reference to the «creditor» (noshèh) evokes the practice of debt-slavery (cf. Exodus 21:2-7; 2 Kings 4:1). By denying both legal acts, the text asserts that the bond between the people and their God has not been dissolved by a legal procedure: the separation is the fruit of transgression (peshaʿ), not of a definitive abandonment. Verses 2-3 shift the register to the cosmic plane — sea dried up, rivers turned to desert, heavens clothed in darkness — taking up the language of the Exodus and of creation to demonstrate that saving power remains intact. Verses 4-9, with their first-person speaker, describe most likely the vocation of a prophetic figure embodying faithful, taught Israel, contrasted with the deaf people of vv.1-2.

Textual Notes (MT / LXX)

Verse 1 sets the Hebrew sèfer keritùt («bill of divorce») against the Greek biblìon tou apostasìou, which preserves the juridical sense. At v.2 a significant divergence is noted: the Masoretic Text reads tivàsh degatàm, «their fish rot/stink» (root bʾsh), whereas the Septuagint has xēranthḗsontai, «they will dry up», harmonizing with the drying up of the sea. At v.4 the Hebrew leshòn limmudìm, «tongue of one who has been taught», becomes in Greek glōssa paideìas, «tongue of instruction», and the Hebrew expression laʿùt … davàr (to support with a word one who is weary), of uncertain root, is rendered by the Septuagint as eipèin lògon en kairō, «to speak the word at the fitting time». At v.6 the Hebrew participle mortìm («those who pluck», implicitly the beard or hair) is simplified in the Septuagint to eis rhapìsmata, «to blows/slaps». At vv.4, 5, 7, 9 the compound title Adonài followed by the proper Name (the Tetragrammaton) recurs: the Hebrew juxtaposes the appellation «Lord» and the unpronounceable Name, while the Septuagint reduces both to a single kýrios. At v.10, where the Masoretic Text has the proper Name twice, the Septuagint has kýrios. Verse 8 preserves forensic vocabulary: matzdiqì («the one who declares me righteous»), yariv («to contend»), baʿal mishpatì («master of my case», i.e., the opposing party).

Jewish Reception (Rabbinic and Liturgical)

The opening of the chapter became subject to rabbinic reflection precisely on the image of the «bill of divorce». The ancient exegetical tradition insists that the interrogative formulation («Where is the bill of divorce of your mother?») implies that no such act was ever delivered: the nuptial bond between the Holy One and the community of Israel endures, and the separation is temporary and remediable. Verse 2, with the question «Why did I come and there was no one?», is read as a reproach for the people's failure to respond to the divine initiative, not as a sign of powerlessness. On the liturgical level, passages from the second part of Isaiah make up the haftaròt of consolation read during the seven weeks between the fast of the Ninth of Av and Rosh haShanah; within this framework the rejection of definitive «divorce» takes on consolatory value for the community commemorating the destruction of the Temple.

Aggadah

The rhetorical question of v.1 regarding the «bill of divorce» nourishes an aggadic line that compares Israel to a wife who has been sent away but not divorced: since the formal act is lacking, return remains always possible, and the separation is interpreted as paternal correction rather than repudiation. The same sensibility rereads the «creditor» of v.1 by denying that the Holy One was obliged to «sell» the children to settle a debt: if there was a sale, it was caused by the very iniquities of the people, according to the principle that each person is sold by their own sins. Verse 2, with the image of the «hand» that has not grown short, is most likely associated in an aggadic key with the mighty acts of the Exodus (the sea dried up), to affirm that the capacity to redeem has never waned.

New Testament Reception and Typology

Verse 6 — «I gave my back to those who strike and my cheeks to those who pluck the beard; I did not hide my face from insult and spitting» — is one of the texts that the ancient Christian tradition connected to the passion narratives, where Jesus is flogged, struck, and spat upon (Matthew 26:67; 27:30; Mark 14:65; 15:19). This is a typological reception, to be distinguished from the historical sense of the prophet, in which the «servant» designates the prophetic figure or faithful Israel. Verse 8 («near is the one who vindicates me… who is my adversary in judgment?») resonates, in its forensic structure, with the hymn of Romans 8:33-34 («who will bring a charge against God's elect? God is the one who justifies; who is the one who condemns?»), which takes up its movement of accusation and acquittal. Verse 9, with the image of the garment that wears out and the moth that devours, shares the motif of perishability taken up in James 5:2. It is to be understood that such recurrences belong to reception history, not to the original text, in which the forensic framework of the exiled community prevails.

Tannaitic Exegetical Notes

An explicit tannaitic testimony on this passage is found in the Mishnah, Soṭah 1:7-9, which articulates the principle of measure for measure (middah ke-neged middah): «With the measure with which a man measures, so it is measured back to him.» This principle illuminates the logic of vv.1-2, where the sale and sending away of the «mother» are not arbitrary divine acts but correspond exactly to the iniquities and transgressions of the people («for your sins you were sold»): the consequence is commensurate with the offense, and does not exceed or substitute a gratuitous repudiation. The same framework of juridical reciprocity is reflected in the forensic vocabulary of v.8 (matzdiqì, «the one who vindicates me»), in which the acquittal of the righteous is the reverse of the condemnation of the guilty (yarshiʿènî, v.9). For the consolatory value of the rejection of «definitive divorce», one may also invoke — more tardily — the treatment of the theme in the Babylonian Talmud, to be cited with sobriety as amoraic rather than tannaitic testimony.

Observance and Liturgy

On the level of practice, the passage nourishes two complementary attitudes. The first is the self-examination implicit in vv.1-2: before lamenting the divine absence, the community is invited to acknowledge its own failure to respond («I called and there was none to answer»). The second is the discipline of daily listening in v.4: «morning by morning he awakens my ear» provides a textual foundation for the idea that morning study and prayer are an awakening of the disciple's ear. The conclusion (vv.10-11) translates all of this into a clear ethical choice: whoever fears the Name and walks in darkness is called to trust and to «lean» (root shaʿan) upon their God, rather than kindling a fire of their own making — an image of self-salvation that turns against those who practice it, on the same critical line as Isaiah 1:29-31 and 66:24. The liturgy of the weeks of consolation, which chants texts from the second part of Isaiah, embraces this passage from recrimination to trust.