Goliath
Goliath is described in the biblical Book of Samuel as a Philistine giant defeated by the young David in single combat. The story signified Saul's unfitness to rule, as Saul himself should have fought for the Kingdom of Israel.
Hagith (opera)
The libretto by is loosely based on the Old Testament, with the emphasis on deception and jealousy in love and death, similar to other popular motifs in operatic works of the early 20th century including Salome and Elektra by Strauss. Dörmann's Libretto tells a Biblical story of King David, the "aged" king in the opera, his female servant Abishag (Hagith) and Solomon (the young king), as described in Chapter One of the First Book of Kings. However, in the Bible, the young woman is called "Avishag", not Hagith. Haggith is one of the wives of David, the mother of Adonijah.