"the master-word that should control this new and incomprehensible being"

The idea that a necromancer could conjure up and control demons through the use of magic words, originating in Ancient Egypt, became popular in Europe during the Middle Ages. Spells in grimoires, such as the Key of Solomon and The Sacred Magic of Abramelin the Mage, instruct the magician to summon the demon in the name of God as part of a litany that strings together biblical references and cabalistic names. The spirit is usually conjured from within a magic circle so that it can do no harm to its master, whose bidding it is then compelled to perform. 

The Golem, an anthropomorphic being made of dust and designed to obey its creator's every command, is brought to life when a magic word is inscribed on its forehead
Public DomainThe Golem, an anthropomorphic being made of dust and designed to obey its creator's every command, is brought to life when a magic word is inscribed on its forehead - Credit: Mikoláš Aleš