The Sacred Magic of Abramelin the Mage is the story of the Egyptian mage Abramelin, or Abra-Melin, who taught a system of magic to Abraham of Worms, a German Jew presumed to have lived from c.1362 – c.1458. The Book of the Sacred Magic of Abramelin the Mage and its ideas have been incorporated within the Hermetic Order of the Golden Dawn, and later within the mystical system of Thelema (created in 1904 by Aleister Crowley). From the book:
Let each one who will carry out this glorious enterprise rest in peace and surety, because in these Three Books is comprised all that can be necessary for this operation. For I have written it with much care, attention, and exactitude; so that there is no phrase which doth not give thee some instruction or advice. However, I pray such an one for the love of God, Who reigneth and will reign eternally, to commence no operation unless beforehand for the space of Six Months he hath read and re-read this Book with care and attention, considering all points in detail; for I am more than sure that he will not encounter any doubtful matter which he will not be able to solve himself, but further day by day will he assume unto himself a great and ardent desire, pleasure, and will, to undertake this so glorious operation; the which can be effected by any person of any religion soever,66 provided, however, that during the Six Moons he bath not committed any sin against the Law and Commandments of God.
Here are all 3 books in The Sacred Magic of Abramelin the Mage trilogy: