As is often the case in Judaism, the answer to this interesting question is not exactly black or white. Normally, suicide is forbidden and against Jewish Law except in instances when the situation would otherwise result in idolatry, murder, or sexual immorality. Euthanasia in cases of terminal illness is strictly forbidden in Orthodox, Conservative, and Reform Judaism. However, the way suicide is defined is open to some debate since many rabbis have required that the person who commits suicide must be of sound mind. This means that those who suffer from mental illness such as clinical depression, bipolar disorder, and the like, and take their own lives, are not legally committing suicide. With regard to the Masada mass suicide, although their bravery and martyrdom in the face of Roman occupation have been commended, on a legal level, their committing suicide and murder is not permitted.