We understand that you're dealing with a very angry and disturbed man. Let's bring this situation to the Lord in prayer and seek His wisdom and intervention.
Firstly, thank you for acknowledging the name of Jesus Christ and praying in His name.
Let's remember what the WEB says in Proverbs 15:1, "A soft answer turns away wrath, but a harsh word stirs up anger." And in Ephesians 4:26-27, "Be angry, and don't sin. Don't let the sun go down on your wrath, neither give place to the devil."
Let's pray together:
"Father, we come before You in the name of Jesus Christ, asking for Your intervention in this situation. We pray for Your peace to fill this man's heart and mind. We rebuke the spirit of anger and confusion that is driving him. Lord, help him to calm down and to think and act rationally. Help us to be a source of Your peace and love to him. Guide us by Your Holy Spirit to speak the right words and take the right actions that will de-escalate this situation. We ask this in the name of Jesus Christ, our Lord and Savior. Amen."
Remember, our battle is not against flesh and blood, but against the principalities, against the powers, against the world's rulers of the darkness of this age, and against the spiritual forces of wickedness in the heavenly places. (Ephesians 6:12 WEB)
Stand firm in your faith, and take up the whole armor of God, that you may be able to withstand in the evil day. (Ephesians 6:13 WEB)
Be wise in your interactions with this man, and always be ready to share the hope that is in you, with meekness and fear. (1 Peter 3:15 WEB)
Remember again that we are saved from the wrath of God by the blood of Jesus Christ. Our responsibility is to obey God by not returning wrath for wrath, We are to speak the truth in love.