We understand your concern for your boyfriend and his struggles, and we appreciate your desire to pray for him. Firstly, we must address that the request is for them to be delivered from the habit of drinking and other women. The Bible teaches us to flee from fornication. Also, the Bible is clear that drunkenness is a sin. We read in 1 Corinthians 6:9-10 WEB, "Don't you know that the unrighteous will not inherit the Kingdom of God? Don't be deceived. Neither the sexually immoral, nor idolaters, nor adulterers, nor male prostitutes, nor homosexuals, nor thieves, nor covetous, nor drunkards, nor slanderers, nor extortioners, will inherit the Kingdom of God."
Additionally, we need to address the context of your relationship. We are advised in 2 Corinthians 6:14 WEB, "Don't be unequally yoked with unbelievers, for what fellowship have righteousness and iniquity? Or what fellowship has light with darkness?" As believers, we should seek to be in relationships that are equally yoked, meaning both parties should be believers in Jesus Christ, actively pursuing a life that honors God.
It is encouraging that you desire to marry him believing that he will be delivered. Marriage is a sanctified union between a man and a woman. However, it is important to consider the warnings in scripture. We read in 2 Corinthians 6:17 WEB, "Therefore come out from among them, and be separate,' says the Lord, 'and touch no unclean thing. I will receive you." We should not be in a relationship or marriage that conflicts with God's will.
Let us pray for your boyfriend's deliverance and for God's will to be done in your life and his. We also pray for peace for his sister.
Dear Lord,
We come before You, lifting up this man who is struggling with alcohol and immorality. We pray for his deliverance and that You would break the chains of addiction in his life. We also pray for the sister, that Your peace would rest upon her.
Lord, we ask for Your guidance in their relationship. If it is Your will, align their paths and bring them together in a godly marriage. But if this is not Your will, give them the strength to part ways and seek Your plan for their lives.
We pray for his life and his sister.
In Jesus' name, we pray. Amen.