The main theme of Paradise Lost by poet John Milton is the rejection of God’s Laws.
This epic work deals with Satan’s rejection of God’s Law and Satan’s subsequent expulsion to earth where he seeks to ruin Man. Satan is expelled with a third of the angels (now demons) who chose to follow him rather than the God.
Satan then tempts Eve to sin and by extension Adam as well. The result is a fallen world that has made a conscious decision to follow their own way and not the way God had in mind from the beginning. Paradise Lost deals with Satan’s attempt to influence Man. It also deals with the loss of Paradise by Mankind because of the original sin of Adam and Eve.
The main point to consider when reading Paradise Lost is that Satan and Man were given everything beautiful and wonderful from God. They were also given “free moral choice.” God set before Satan, and then later Mankind (Adam and Eve), the freedom to choose a way that leads to life, or a way that may seem attractive and right – but leads to Death. Satan beguiled Eve, which led to Adam’s downfall as well.
The rejection of God’s Law resulted in Satan (and the fallen angels) being thrown out of Heaven to the Earth, and Adam and Eve being thrown out of Eden. Therefore, the rejection of God and His Laws set in motion universe-changing events and also the ages long battle between good and evil.
As everyone knows the theme of paradise lost is "to justify the ways of god to man". god is supreme. satan who aspires to become god by way of tempting Adam and Eve in the garden of Eden, in the guise of a serpent finally suceeds in making them eat the fruit. satan, the fallen angel along with other disobient fallen angels' debate in the pandimonium brings them disaster . when their sins were measured to be very high they were driven to hell forever. The sufferings and pain they undergo become endless. The first sin of Adam and Eve brought eternal dufferings to human beings. By eating the forbidden fruit they not only disobey god but they have to make their living only through hard work. Milton explicates that god is omnipotent. only obedience and love will get man closer to god.