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.
Davidiad
The Davidiad (also known as the Davidias) is the name of a neo-Latin heroic epic poem by the Croatian national poet and Renaissance humanist Marko Marulić (whose name is sometimes Latinized as "Marcus Marulus"). Likely finished in AD 1517, the poem, as its Latin title suggests, details the ascension and deeds of David, the second king of the United Kingdom of Israel and Judah, who is said to have reigned 970 BC.