It is a subject that should not be taken lightly and should be dealt with very swiftly. If any of your friends feel down or depressed, help them and be there for them. Do not get mad at them for being depressed and do not ignore them, thinking the problem will go away. Suicide threats must be taken seriously. Anyone who is depressed needs support and attention.
Many suicides reveal a history of at lest one previous attempt.
The second often succeeds. Priests, ministers, rabbis who were suffering from depression have committed suicide. Religion is not a guarantee against suicide. A suicidal person gives many clues and warnings. Being able to recognize danger signs can save a life.