This book contains revelations of the Guardians of the Holy Grail, received in the proximity of Abdruschin.
Interested readers are advised to first have themselves thoroughly acquainted with the principal work of Abdruschin, titled: "In the Light of Truth", which gives an unparalleled exposition of the all the actively working laws of God, which are the Truth of God, and whose ground alone humanity can advance towards the Kingdom of God the Father.