Origins and Context
When Gioachino Rossini was commissioned to write a new opera for the Teatro San Carlo in Naples in 1817, he turned to the most dramatic story in the Hebrew Bible: the Exodus. Premiered on 5 March 1818 under the title Mosè in Egitto (Moses in Egypt), the opera seria in three acts became the most celebrated biblical opera of the nineteenth century and established a template that Verdi, Meyerbeer, and Saint-Saëns would follow for decades. Rossini was twenty-six years old and already the most famous composer in Italy. His decision to set Exodus 7-14 reflected both the serious religious tastes of the Neapolitan court and his own instinct for dramatic spectacle.
The Libretto and Biblical Source
The libretto by Andrea Leone Tottola draws on the Exodus narrative (chapters 7-14) while adding a romantic subplot invented for operatic purposes: a love affair between Osiride, son of Pharaoh, and Elcia, a Hebrew woman. This fictional love story creates the dramatic tension that drives the opera: Osiride refuses to let the Hebrews go partly because he cannot bear to lose Elcia. The invented subplot was controversial but gave the opera its emotional core, translating abstract theological conflict into personal tragedy.
The plagues of Exodus 7-10 are portrayed through choral lament and orchestral illustration. Rossini's orchestra darkens dramatically for the plague of darkness (Exodus 10:22) and reaches its expressive peak in Moses's prayer before the crossing of the Red Sea - the celebrated 'Dal tuo stellato soglio' (From Thy starry throne), one of the most famous operatic prayers of the Romantic era.
The Famous Prayer
The prayer 'Dal tuo stellato soglio' was not part of the original 1818 version. Rossini added it for the 1819 revival after the staging of the final scene - Moses parting the Red Sea - was mocked by audiences who found the mechanical wave effects laughably inadequate. The prayer, sung by Moses and the assembled Hebrews as a plea to God before the miraculous crossing, became so immediately popular that it reportedly reduced audiences to tears. It combines the grandeur of Exodus 15:1 (Moses's Song of the Sea) with the supplication of Exodus 14:15's divine command to Moses to stretch out his hand.
The prayer works as a piece of pure vocal devotion placed at the hinge between catastrophe and deliverance. The simplicity of its melody - a long, sustained cantilena in E major - creates an almost liturgical solemnity that audience members described as more moving than anything they had heard in church. Stendhal, who was in Naples during the 1819 performances, wrote that the prayer produced an effect on its listeners unlike anything else in European music.
The Paris Revision: Moïse et Pharaon
In 1827 Rossini completely revised the opera for the Paris Opéra, expanding it to four acts and retitling it Moïse et Pharaon, ou Le passage de la Mer Rouge. The Paris version adds substantially to the choral writing, gives greater weight to the dramatic confrontations between Moses and Pharaoh, and reconfigures the romantic subplot. The orchestration is also enlarged to match the resources and expectations of the Paris stage, which required a grander spectacle than Naples.
The Paris version became the template for the genre of biblical grand opera that would define French opera for the next fifty years. Giacomo Meyerbeer drew directly on it for Les Huguenots and Le prophète, and Verdi acknowledged its influence on Nabucco. The formal structure of the oratorio-opera hybrid - a work with the emotional scope of opera and the devotional content of oratorio - was Rossini's invention, and it opened an entirely new genre.
Musical Characterization of Moses
Rossini gives Moses a bass voice - a deliberate casting choice that associates the prophet with gravity, authority, and the deep resonance of the divine. In the tradition that Rossini established, Moses is always a bass: Verdi's Moses in Nabucco (the character Zaccaria), Schoenberg's Moses in Moses und Aron, and Cecil B. DeMille's casting of Charlton Heston as a commanding baritone figure all reflect the Rossinian archetype of the prophet as a person of massive vocal and physical presence.
The confrontations between Moses (bass) and Pharaoh (tenor) in the opera create a vocal symbolism: the ancient authority of Israel's God versus the passionate self-assertion of Egyptian power. When Moses's bass voice pronounces the plagues and commands the sea to divide, the musical weight of the voice underlines the theological claim that divine authority supersedes earthly power.
Legacy and Influence
Mosè in Egitto was performed across Europe throughout the nineteenth century and inspired an entire tradition of biblical opera and oratorio. Its influence can be traced directly through Verdi's Nabucco (1842), which similarly uses the suffering of the Hebrew people as a vehicle for nationalist sentiment, and through the grand opera tradition in France. The opera also influenced the oratorio tradition: Mendelssohn attended performances of the Paris version and drew on its dramatic techniques in Elijah.
The prayer 'Dal tuo stellato soglio' became one of the most recognized sacred melodies in Europe, performed in concert halls, drawing rooms, and churches throughout the nineteenth century. Paganini arranged it for violin; Liszt arranged it for piano. The melody's simple grandeur gave it a universality that transcended its operatic context and made it function almost as a liturgical piece.
The opera also raises enduring questions about how the Bible is dramatized for entertainment. Rossini's invented love story between an Egyptian prince and a Hebrew woman introduces a romantic dimension foreign to the biblical text. Yet this invention allows the opera to explore the personal cost of Pharaoh's refusal: the ten plagues become not merely an abstract theological contest but a tragedy that destroys families and lovers on both sides of the conflict.