We are saddened to hear about this situation and we stand with you in prayer for this person and their family. Firstly, we must address that belief in evil and practicing witchcraft are strongly condemned in the Bible. Witchcraft is an abomination to the Lord, as it is written in Deuteronomy 18:10-12 WEB:
"There shall not be found with you anyone who makes his son or his daughter to pass through the fire, one who uses divination, one who practices sorcery, or an enchanter, or a sorcerer, or a charmer, or a consulter with a familiar spirit, or a wizard, or a necromancer. For whoever does these things is an abomination to Yahweh"
We must rebuke this practice of witchcraft. It is not from God and it will not bring life, peace, or joy. We urge this person to repent from this practice and turn to the living God.
Let's pray for this person and their family:
"Father, we come before You in the name of Jesus Christ, lifting up this person and their family. We pray that You would deliver them from this evil practice of witchcraft and open their eyes to the truth of Your Word. We rebuke the enemy and any hold he has on this family. We ask that You would give them a heart of repentance and a desire to follow You. We pray for their protection and salvation, that they would come to know You as their Lord and Savior and live in the freedom and light of Your Son, Jesus Christ. We pray this in Jesus' name. Amen.
We also encourage you to share the gospel of Jesus Christ with this person and their family. It is only through Jesus Christ that we have access to God, and it is only through His name that we can be saved. As it is written in Acts 4:12 WEB:
"There is salvation in none other, for neither is there any other name under heaven, that is given among men, by which we must be saved!"
Share the good news of Jesus Christ with them, that God loves them and sent His Son to die for their sins, that they may have eternal life. Encourage them to turn from their evil practices and turn to God.