The Gnostic Heresies of the First and Second Centuries is a book written by Henry Longueville Mansel that delves into the early Christian movement of Gnosticism. The book provides a comprehensive analysis of the beliefs, practices, and origins of Gnosticism, a religious movement that emerged in the first and second centuries AD. Mansel examines the various Gnostic sects and their teachings, including their views on God, the universe, and salvation...