How did John Milton's background influence Paradise Lost?

John Milton's treatise of the theme in Paradise Lost was new, though the theme was a very old one in literature. Whatever be the influence and power of God over man, when ousted from the Paradise and while leaving that beautiful land behind, Adam and Eve did not accuse each other or condemn one another to please their Creator. The last they were seen were walking away hand in hand, the first union against God. Certainly it is clear what was on their minds. It was the new-found Knowledge impregnated by the Satan who in his nether world discoursed: If our minds are within our reach, we will make a heaven out of this hell. It was new and ground-breaking thought in those intolerant times.