All the oracles seem to have undergone later revision, enrichment, and adaptation by editors and authors of different religions, who added similar texts, all in the interests of their respective religions. The Sibylline oracles are therefore a pastiche of Greek and Roman pagan mythology, employing motifs of Homer and Hesiod; Judeo-Christian legends such as the Garden of Eden, Noah and the Tower of Babel; Gnostic and early Christian homilies and eschatological writings; thinly veiled references to historical figures such as Alexander the Great and Cleopatra, as well as many allusions to the events of the later Roman Empire, often portraying Rome in a negative light.