Thank you for bringing this heavy burden and for caring enough to pray for this man. What you describe is painful and serious. To be beaten, locked in a trunk, pushed or crashed while in a wheelchair, robbed of money meant for his care, and then blamed and cursed by his own children is a great deal of suffering. God sees all of it, and He cares about this man, his safety, his disability, and his family.
At the root of repeated broken relationships is often a deeper issue with our relationship with God. Scripture puts our relationship with God first for a reason. When that vertical relationship is not right, every horizontal relationship with other people becomes out of balance. We can spend all our energy trying to fix one relationship with another person, and while we work on that one, others fall apart, and we stay frustrated. The way to find balance is not to chase each human relationship one by one, but to come back to the center and get right with God. When that central relationship is restored, it begins to set the other relationships in order. We can trace much of our trouble with people back to trouble in our walk with God.
That is why the gospel does not call us to a ritual or a set of rules to try harder to keep. God does not want a legal or ritual connection. He wants a living, loving relationship as a Father with His children. Jesus taught us to pray, Our Father in heaven, because God wants that close, intimate fellowship. Sin separates us from Him, but God has made a way to be reconciled through the blood of Jesus Christ. Salvation is through Jesus alone, and when we come to Him in repentance and faith, we are given a new standing before God and a new life in the Spirit. The good fruit in our lives, including healthier relationships, wisdom with money and possessions which belong to God and are entrusted to us, and victory over the enemy who seeks to destroy us, comes naturally as a result of that restored relationship, not by striving in our own strength.
This man appears to be caught in a painful cycle. He leaves a dangerous situation and then returns to it, even when he does not recognize the danger. Many people live in that kind of cycle of frustration, trying to escape, feeling guilt and hurt, then going back again. Trying to fix the cycle by focusing only on the other person will not break it. He needs to step out of the cycle by turning fully to the Lord. God does not want a half hearted commitment where we keep one foot in a destructive pattern. He wants a wholehearted love where we put Him first. When a person gives his heart fully to Christ, God can give him clarity to see danger, courage to set boundaries, and strength to walk away from what harms him.
Because the abuse you describe is dangerous, love requires truth and protection. It is not loving or helpful to pray that God would bless a relationship that is outside His design and that is violent and exploitive. God's design for sexual intimacy and sharing a home is within the lifelong covenant of marriage between one man and one woman. What you describe, moving back and forth with a girlfriend who is involved with another man, paying rent for her and her boyfriend, and enduring physical harm, is not that design and it is not safe. Praying for him does not mean asking God to make that arrangement work. It means asking God to deliver him from it, to heal him, and to lead him into wholeness.
Please encourage him, and his family, to seek safe and wise help quickly. He needs a consistent community that will help him stay safe, that will not encourage him to return to harm, and that will support steps toward sobriety and health if rehab is needed. He should not be pressured to provide money for a girlfriend and her boyfriend, and he should not be left alone in situations where he has been physically harmed. If he is in immediate danger, he and his family should reach out to trusted pastors and counselors and to the proper authorities who can help protect a vulnerable adult with a disability. His children also need prayer and guidance. It is wrong for them to curse their father, and God places great importance on honor in the family. They need to be shown a better way and kept from being influenced to disrespect or harm him.
We will pray for him now.
Father in heaven, we lift this man to You through Jesus Christ. You know his body, his leg and his disability, his past injuries and his present pain. You see every time he has been harmed, locked away, beaten, and robbed, and every harsh word spoken over him. Have mercy on him. Draw him to Yourself. Give him a clear encounter with Your love through Jesus, forgive his sins, and make him new. Break the cycle that keeps pulling him back to danger. Open his eyes to see what is harmful, and give him the desire and strength to turn away and to remain away. Surround him with safe, godly people who will speak truth, protect him, and help him pursue sobriety and health. Provide for his physical and financial needs and protect what You have entrusted to him. Heal his family relationships, soften his children's hearts, and help them to honor and encourage him rather than curse him. Lead him into a right relationship with You first, so that every other relationship can be brought into right order by Your grace. In the name of Jesus we ask this, amen.