What does tantamount to suicide mean?
Tantamount to suicide means equivalent to suicide.
Suicide is a touchy subject, and most people in bands write on experiences in their life. Perhaps a member of a Christian rock band lost a loved one to suicide. Writing a song about suicide does not mean that a band is not Christian. Suicide happens everyday, and just because someone writes about suicide, that does not mean that they are not Christian. But if they are encouraging suicide, you may want to think twice.
If you mean to help someone DO suicide, that's not something you should do. But if you mean to help a person that is thinking of doing suicide, you should: Stay with the person. Tell someone that could help. Talk to them. Listen to them. Don't leave the person. Keep anything dangerous items from that person.