Over 25 years ago I had a friend who killed herself, and she was a christian, for some reason she made a decision to take her own life, and leave a 10 year old daughter who she loved more than herself, why she took her life only God knows, but I think that anyone who takes their own life does not know what they are doing, to this day I try to understand why she took her life, when someone is depressed to that point that they take their own life they do no know what they are doing, and there is only one unforgivable sin, and that is not accepting Jesus as our Lord and Savior and that HE is the SON OF GOD.