Enoch - And in those days the angels shall return And hurl themselves to the east upon the Parthians and Medes: They shall stir up the kings, so that a spirit of unrest shall come upon them, And they shall rouse them from their thrones, That they may break forth as lions from their lairs, And as hungry wolves among their flocks.

Notes

The book of Enoch is not part of the canonical scriptures (The Bible) we know today and we don't know how accurate it is.

Some belive while Enoch is not inspired by God that it still serves as a historical book on the time before the flood. It's also quoted in the New Testament in Jude 1:14-15.

Because of this I wanted to include this book for historical reasons.

I would recommend reading the Bible first and foremost as it should be your foundation. Then if you are intrested you can take a look at the book of Enoch.