If someone is an old mother and is being threatened verbally by her son, it is important to take the threats seriously. First and foremost, it is important to ensure your safety. If you feel unsafe in any way, seek help from family, friends, or local services such as police or social workers.
It is important to set boundaries and communicate them clearly to your son. Remind your son that verbal threats are not acceptable behavior and that any form of violence will not be tolerated. Be sure to enforce these boundaries and consequences if they are broken.
Finally, it is important to seek professional help. Talking to a counselor or therapist can help you understand the root causes of this behavior, as well as how to best handle and manage it.