In his Prometheus, Shelley seeks to create a perfect revolutionary in an ideal, abstract sense (thus the difficulty of the poem). Shelley's Prometheus could be loosely based upon the Jesus of the Bible and Christian orthodox tradition, as well as Milton's character of the Son in "Paradise Lost". While Jesus or the Son sacrifices himself to save mankind, this act of sacrifice does nothing to overthrow the type of tyranny embodied, for Shelley, in the figure of God the Father. Prometheus resembles Jesus in that both uncompromisingly speak truth to power, and in how Prometheus overcomes his tyrant, Jupiter; Prometheus conquers Jupiter by "recalling" a curse Prometheus had made against Jupiter in a period before the play begins. The word "recall" in this sense means both to remember and to retract, and Prometheus, by forgiving Jupiter, removes Jupiter's power, which all along seems to have stemmed from his opponents' anger and will to violence.