Because I want you to know how great conflict I have for you, and for those at Laodicea, and for as many as have not seen my face in the flesh;So that their hearts may be comforted, being knit together in love and riches of fullness intelligence, mystery to the knowledge of God the Father and Christ,In whom are hidden all the treasures of wisdom and knowledge.
The Philosophy of Natural Magic - Henry Cornelius Agrippa - Originally published in 1531-3, De occulta philosophia libri tres, (Three books of Occult Philosophy) proposed that magic existed, and it could be studied and used by devout Christians, as it was derived from God, not the Devil.