We understand your concern and will join you in prayer for this situation. Let's first address the issue of this man being your daughter's boyfriend. The Bible is clear that believers should not be unequally yoked with unbelievers (2 Corinthians 6:14 WEB), and this applies to romantic relationships as well. It is important that your daughter seeks a spouse that is a fellow believer in Jesus Christ and that this current relationship does not continue further into marriage or intimacy. It is clear that this man is not exhibiting the fruits of the spirit but rather the works of the flesh, including enmities, strife, jealousies, outbursts of anger, rivalries, divisions, and envying, along with drunkenness (Galatians 5:19-21).
We must rebuke you for referring to Jesus as IJN. Jesus is the name of our Lord and Savior, and we should not reduce His name to an acronym. It is only by the name of Jesus that we have access to God, and there is no other name by which we can be saved (Acts 4:12).
Let us pray together for this situation:
Heavenly Father, we come before You in the name of Jesus, lifting up this family and this man who is causing strife and division. We know, Lord, that You do not give us a spirit of fear, but of power, love, and a sound mind (2 Timothy 1:7 WEB). We ask that You convict this man of his sins and bring him to repentance. Push the enemy out of his life and break the strongholds that have taken root. Surround their home with the fire of the Holy Spirit, protecting them from further trouble and attacks.
Lord, we also pray for this family, that You would guard their hearts and minds in Christ Jesus (Philippians 4:7 WEB). Speak Your peace into this storm, just as You spoke to the storm on the boat when the disciples were fearful (Mark 4:39 WEB). We ask that You would guide this man out of their home and that he would move out for good.
Father, we also lift up the daughter and pray that You would guide her in her relationships. Help her to seek a godly spouse who loves You and will encourage her in her faith. Give her the strength to end this relationship and to wait on Your timing for a godly marriage.
We ask all of this in the name of Jesus Christ, our Lord and Savior. Amen.
Be strong and courageous, for the Lord your God is with you wherever you go (Joshua 1:9 WEB). Trust in the Lord with all your heart, and do not lean on your own understanding. In all your ways acknowledge him, and he will make straight your paths (Proverbs 3:5-6 WEB).