Ephesians 6:12 describes the demonic enemies that have been launched against Christians, their families, their church, their communities, and their nation. This book traces some of their past and current activities. It also explains their goals which will culminate in bringing into existence the "Beast" described in the Book of Revelation. Their goals are consistent with Satan's plans to rule as god of this world and to forever maintain that position.
The Apostle Peter warns Christians (1 Peter 5:8) to be alert so we can thwart their efforts and create an environment that will ultimately culminate in the Jews calling for their Messiah to return, to fight against the world's forces attempting to destroy them, and to establish his kingdom and reign as King of Kings and Lord of Lords.