Avoid every kind of evil. Some Bible Scholars says King Manasseh made an altar image of him. Where your treasure is there your heart will be also. Sorcery means a lot of power and come from evil. Divination means predicting the signs. Witchcraft means a form of magic.
Galatians 5:19-20 19 The acts of the flesh are obvious: sexual immorality, impurity and debauchery; 20 idolatry and witchcraft; hatred, discord, jealousy, fits of rage, selfish ambition, dissensions, factions
Deuteronomy 18:10-11 10 Let no one be found among you who sacrifices their son or daughter in the fire, who practices divination or sorcery, interprets omens, engages in witchcraft, 11 or casts spells, or who is a medium or spiritist or who consults the dead.
Leviticus 19:20 “If a man sleeps with a female slave who is promised to another man but who has not been ransomed or given her freedom, there must be due punishment. Yet they are not to be put to death, because she had not been freed.
Mediums consults the soul of people who are dead.
Isaiah 8:19 When someone tells you to consult mediums and spiritists, who whisper and mutter, should not a people inquire of their God? Why consult the dead on behalf of the living?
How should you know that you wont practice it? Just read the word of God.
Galatians 3:10-13 10 For all who rely on the works of the law are under a curse, as it is written: “Cursed is everyone who does not continue to do everything written in the Book of the Law.” 11 Clearly no one who relies on the law is justified before God, because “the righteous will live by faith.” 12 The law is not based on faith; on the contrary, it says, “The person who does these things will live by them.” 13 Christ redeemed us from the curse of the law by becoming a curse for us, for it is written: “Cursed is everyone who is hung on a pole.”
Important to listen to God's word for us to have encouragement in our life. Go back to Him every time we fall.