Elijah (German: Elias), Op. 70, MWV A 25, is an oratorio written by Felix Mendelssohn. It premiered in 1846 at the Birmingham Festival. It depicts events in the life of the Biblical prophet Elijah, taken from the books 1 Kings and 2 Kings of the Old Testament.
This piece was composed in the spirit of Mendelssohn's Baroque predecessors Bach and Handel, whose music he loved. In 1829 Mendelssohn had organized the first performance of Bach's St Matthew Passion since the composer's death and was instrumental in bringing this and other Bach works to widespread popularity. By contrast, Handel's oratorios never went out of fashion in England. Mendelssohn prepared a scholarly edition of some of Handel's oratorios for publication in London. Elijah is modelled on the oratorios of these two Baroque masters; however, in its lyricism and use of orchestral and choral colour the style clearly reflects Mendelssohn's own genius as an early Romantic composer.
The work is scored for four vocal soloists (bass-baritone, tenor, alto, soprano), full symphony orchestra including trombones, ophicleide, organ, and a large chorus singing usually in four, but occasionally eight or three (women only) parts. The title role is for bass-baritone and was sung at the premiere by the Austrian bass Joseph Staudigl.
Mendelssohn had discussed an oratorio based on Elijah in the late 1830s with his friend Karl Klingemann, who had provided him with the libretto for his comic operetta Die Heimkehr aus der Fremde, which resulted in a partial text that Klingemann was unable to finish. Mendelssohn then turned to , the librettist for his earlier oratorio St. Paul, who quickly abandoned Klingemann's work and produced his own text that combined the story of Elijah as told in the Book of Kings with Psalms. In 1845, the Birmingham Festival commissioned an oratorio from Mendelssohn, who worked with Schubring to put the text in final form and in 1845 and 1846 composed his oratorio to the German text. He had it promptly translated into English by William Bartholomew, who was not only a poet but a composer who could work with the score as he translated. The oratorio premiered in its English version. The German version premiered on the composer's birthday, February 3, 1848, in Leipzig a few months after Mendelssohn's death, conducted by Niels Wilhelm Gade.