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.
David with the Head of Goliath (Caravaggio, Vienna)
The painting can be compared with the "David with the Head of Goliath" in the Galleria Borghese, which dates from either 1607 or 1609–10. The two are very similar—Caravaggio frequently explored a subject in multiple variations, most notably his many versions of John the Baptist—but the Vienna painting is less dark in mood, the David more triumphant than the introspective and oddly compassionate David of the Borghese, and the head of Goliath, widely accepted as a self-portrait in the Borghese work, is more generic.