WHAT IS IT?

As i was reading I came across the book called Paradise lost. I had never heard of the book so I was curious to see what the history is of this book, what this book about, and why it influences the monster.
Paradise Lost, I found, is an epic poem in blank verse. It's was author the 17Th-century English poet John Milton. Paradise lost was originally published in 1667 in ten books! A second edition soon followed in 1674, but then was turned into twelve books.
The poem Paradise lost is about the Christian story of the Fall of Man, the temptation of Ada and Eve by the "fallen angel" Satan and about them being thrown out of the Garden of Eden.

In the poems Milton incorporates Paganism(which denotes all religions other than Judaism, Christianity, and Islam) ,classical Greek references, and Christianity within the poem. Paradise lost talks about diverse topics from politics, marriage, monarchy, and discusses many difficult topics and issues, like fate, predestination, the Trinity, and the introduction of sin and death into the world, as well as angels, fallen angels, Satan, and the war in heaven. Milton sources are mainly from Genesis, much of the New Testament, the Book of Enoch, and other parts of the Old Testament.

Paradise Lost, throughout the novel, provides information for the monster as he tries to understand his identity.He compares himself to both Adam and Satan, perceiving himself as both human and demonic. He compares himself to Adam because he was created and there is no other being like him. He compares himself to satin because he has envy and hate in him. He is unlike anything else, as Adam is and he is cursed like Satan. And in this part of the novel he becomes aware of his creator’s (Victor Frankenstein) hate for him.

Did you know what Paradise lost was? Had you ever heard of the book before you saw it in Frankenstein?
What else do you think the monster could compare his life to?