The Book of Damnation

The Book of Damnation is an ancient book that gives all the rules and information that the Sons of Ipswich need to go by to live with the powers that they possess, as well as instructions on how to use The Power. It appears as an old, leather-bound, book with a wraith-like figure holding a scythe on the cover.

The Covenant
In the movie, the Sons of Ipswich go into the basement of the Colony House, and Caleb Danvers uses The Power to get the Book of Damnation off of the bookshelf.

He shows the other other three Sons of Ipswich the book that lists the names of the others during the Salem Hunt of the people that brought charges against the Putnam family, and how John Putnam was one on the list and how Agnes Goody Pope claimed that John Putnam came to her in her dreams as an incubus after she was widowed.

Her husband, Jacob, died June 4, 1692. Her son, Hagan, was born on April 11, 1693, which was 10 months and 24 days later, meaning that Chase Collins was a descendent of John Putnam through the Pope family, and that's how he had access to The Power.

Trivia

 * For some reason, the Book of Damnation doesn't have any information detailing how The Power came into existence.
 * This may be due to the book being around after The Power. However, the book likely predates the settlement of the Ipswich colonies.