We understand your concern for your boyfriend and the difficulties he is facing. First, we want to address that the Bible is clear that God is against witchcraft and such practices are not only harmful but also forbidden. As it says 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 someone who consults with a familiar spirit, or a wizard, or a necromancer. For whoever does these things is an abomination to Yahweh".
However, we also need to address that the Bible teaches that we should not be in a romantic relationship that is not aligned with God's will. Specifically, 2 Corinthians 6:14 WEB states "Don't be unequally yoked with unbelievers, for what fellowship have righteousness and iniquity? Or what fellowship has light with darkness?" Since your boyfriend is not yet God's provided spouse, there seems to not be God's provided option to marry and help him. In fact, if your boyfriend is married to the woman who birthed his child, then you are courting adultery. Adultery is specifically forbidden by the ten commandments. Exodus 20:14 WEB, "You will not commit adultery". Adultery is also mentioned in the New Testament such as in Matthew 5:28 WEB, "But I tell you, that everyone who looks at a woman to lust after her has committed adultery with her already in his heart". We are not rebuking without compassion since no one is born saved. We do not know if you previously are born again believers. If not, we pray that you and your boyfriend will turn away from sin and become born again believers. Romans 6:23 WEB, "For the wages of sin is death, but the free gift of God is eternal life in Christ Jesus our Lord."
It is also only by the name of Jesus Christ that we can have access to God. John 14:6 WEB, Jesus said to him, I am the way, the truth, and the life. No one comes to the Father, except through me. Because of this, even if you and your boyfriend are not saved, it is fine to pray for your boyfriend and his situation. Be encouraged that God promises in James 5:16, WEB "The effective prayer of a righteous man can accomplish much."
Let us pray together:
Dear Heavenly Father,
We come before You in the name of Jesus Christ, lifting up this situation. We pray for your boyfriend, that You would deliver him from the evil that is being practiced against him. We rebuke the spirits of witchcraft and bind them in the name of Jesus Christ. We pray that You would give him strength and protection, and that You would bring an end to the harmful influence of his baby mama.
We also pray for you and your boyfriend's salvation. We rebuke any sin of adultery and pray that you and your boyfriend turn from any sexual sin. We pray that you stop living in adultery and turn from the sin before being punished by God and cast into hell. We pray that you believe in Jesus and become married to who God intends you to be married to. The context also implies he is still living with his baby's mother since he sees her if that is the case we pray for stronger conviction and more strength. We pray that you both turn from witchcraft and adultery and take steps to live a godly lifestyle. Ask in Jesus's name that you and your boyfriend's salvation be complete and that God will give you a Godly man to court as a spouse instead. Ask this in Jesus' name. "Whoever will call on the name of the Lord will be saved." Romans 10:13 WEB.
We ask all these things, Father, because
In Jesus Christ's name, we pray and believe. Amen.