Answer:
There are several places in the Bible that people committed suicide, including King Saul falling on his own sword and Judas hanging himself.
The Bible speaks strongly about the act of murder, including the 10 commandments. Taking your own life would be considered murder since you are taking a life, even if it is yours.
Many denominations teach that anyone committing suicide would not go to Heaven because they did not have a chance to be repentant for the sin since it was their last act. However, God judges the heart and not the mind so we do not always know what exactly was going on in that person’s heart or mind…thus it would not be right for us to judge.
There are cases where someone was literally “mentally ill” and did not understand their actions, and of course people that on September 11 jumped to their death instead of being burned alive. It is not so simple as to group everyone into an “either or” situation.
What I do know is this (and it is always better to err on the safe side). God never gives us a situation that is too great for us to bear if we seek Him. 1 Corinthians 10:13 There hath no temptation taken you but such as is common to man: but God is faithful, who will not suffer you to be tempted above that ye are able; but will with the temptation also make a way to escape, that ye may be able to bear it.