Take an appointment with a psychiatrist and a psychotherapist… you will need both to address the issue at a clinical level that may require medication as well at a thoughts emotions and behavioral level to explore the trauma or shock that may be impacting him

Consult

Hi The priority here is to get a psychiatric evaluation as soon as possible, even if you have to take help from other family members to bring him in. Avoid confronting or challenging his beliefs directly, as that can increase anger; instead, keep communication calm and neutral. Early treatment can significantly improve his condition and prevent worsening. This situation can feel overwhelming for the family, so you may also need guidance on how to handle him safely and effectively. Take therapy. You can connect with me on nine two six six seven two six zero six five.

Hi.. will need further history regarding the same to advise appropriately. Could be Psychosis or Mania. Consult online for treatment

"Hi there, I understand that seeking help can feel overwhelming, but you’ve already taken the first brave step. I can guide you with a clear treatment plan tailored just for you, so you can feel better and regain control over your life. You can reach me directly on WhatsApp for quick support on seven zero eight two zero two two zero six two."

This sounds very difficult for you and your family. Such sudden changes in behavior and unusual beliefs can sometimes be due to an underlying mental health issue, but it needs proper evaluation. It’s important not to argue with him and to seek timely help. Please consult a psychiatrist for a detailed assessment. If needed, you can also reach out to me at nine three two seven one eight four seven six seven.