Christian views on magic vary widely among Christian denominations and among individuals. Many Christians actively condemn magic as satanic, holding that it opens the way for demonic possession. Some Christians simply view it as entertainment. Conversely, some branches of esoteric Christianity actively engage in magical practices.
Biblical references
There are several references to witchcraft in the Bible that strongly condemn such practices. For example, condemns anyone who "casts spells, or who is a medium or spiritist or who consults the dead. Anyone who does these things is detestable to the Lord, and because of these detestable practices the Lord your God will drive out those nations before you", and states "Do not allow a sorceress to live" (or in the King James Bible "thou shalt not suffer a witch to live"). It has also been suggested that the word "witch" (Heb. מְכַשֵּׁפָ֖ה məḵaššêp̄āh) might be a mistranslation of "poisoner."
Others point to a primitive idealist belief in a relation between bewitching and coveting, reflected in the occasional translation of the Tenth Commandment as 'Thou shalt not covet'. This may suggest that the prohibition related specifically to sorcery or the casting of spells to unnaturally possess something.
Some adherents of near-east religions acted as mediums, channeling messages from the dead or from a familiar spirit. The Bible sometimes is translated as referring to "necromancer" and "necromancy" (). However, some lexicographers, including James Strong and Spiros Zodhiates, disagree. These scholars say that the Hebrew word kashaph (כשפ), used in Exodus 22:18 and 5 other places in the Tanakh comes from a root meaning "to whisper". Strong, therefore, concludes that the word means "to whisper a spell, i.e. to incant or practice magic". The Contemporary English Version translates as referring to "any kind of magic".
At the very least, older biblical prohibitions included those against 'sorcery' to obtain something unnaturally; 'necromancy' as the practice of magic or divination through demons or the dead, and any forms of malevolent 'bewitchery'.
Early Paulian Christianity
The Apostle Paul's Epistle to the Galatians includes sorcery in a list of "works of the flesh". This disapproval is echoed in the Didache, a very early book of church discipline which dates from the mid-late first century.
Medieval views
During the Early Middle Ages, the Christian Churches did not conduct witch trials. The Germanic Council of Paderborn in 785 explicitly outlawed the very belief in witches, and the Holy Roman Emperor Charlemagne later confirmed the law. Among Eastern Orthodox Christians concentrated in the Byzantine Empire, belief in witchcraft was widely regarded as deisidaimonia—superstition—and by the 9th and 10th centuries in the Latin Christian West, belief in witchcraft had begun to be seen as heresy.
Christian perspectives began to change with the influential writings of the mystic poet Dante Alighieri and scholastic philosopher Thomas Aquinas, both of whom believed in astrology, whilst condemning sorcery as moral perversion. Dante also condemned then-current forms of alchemy and divination, whilst Aquinas had a more nuanced and sympathetic view.
Towards the end of the Middle Ages and the beginning of the early modern period (post-Reformation), belief in witchcraft became more popular and witches were seen as directly in league with the Devil. This marked the beginning of a period of witch hunts among early Protestants which lasted about 200 years, and in some countries, particularly in North-Western Europe, tens of thousands of people were accused of witchcraft and sentenced to death.
The Inquisition within the Roman Catholic Church had conducted trials against supposed witches in the 13th century, but these trials were to punish heresy, of which belief in witchcraft was merely one variety. Inquisitorial courts only became systematically involved in the witch-hunt during the 15th century: in the case of the Madonna Oriente, the Inquisition of Milan was not sure what to do with two women who in 1384 and in 1390 confessed to have participated in a type of white magic.
Not all Inquisitorial courts acknowledged witchcraft. For example, in 1610 as the result of a witch-hunting craze the Suprema (the ruling council of the Spanish Inquisition) gave everybody an Edict of Grace (during which confessing witches were not to be punished) and put the only dissenting inquisitor, Alonso de Salazar Frías, in charge of the subsequent investigation. The results of Salazar's investigation was that the Spanish Inquisition did not bother witches ever again though they still went after heretics and Crypto-Jews.