Don't believe that people who talk about suicide never do it. Many give definite indications of their intent to die. Remove all firearms, drug stashes etc from your home. Follow your instincts. If you suspect that your loved one may act soon on an impulse, do not leave him and get him to a hospital as quickly as possible.
Death is an unknown to the suicidal person a path to peace.
This is what one woman had to say about here severe suicide attempt from which she eventually recovered . I expected a lot more from death. I thought it would be a triumphant feeling of peace and tranquility. I thought it would be peaceful cessation. All I got was oblivion and when I got there, I wanted to come back.