What is the poem Paradise Lost about and what is the main idea?

Paradise Lost is an epic poem by John Milton that retells the biblical story of the fall of humanity, focusing on the rebellion of Satan and the expulsion of Adam and Eve from the Garden of Eden. The main idea of the poem is the exploration of themes such as free will, temptation, disobedience, and the consequences of sin. Milton also examines the concepts of good and evil, justice, and redemption.