Everyone is sure to die, for no one is excused from the hands of death, which is but a feature of the Supreme Personality of Godhead (mrtyuh sarva-haras caham). When one becomes a devotee, however, he is not destined to die according to a limited duration of life. Everyone has a limited duration of life, but a devotees lifetime can be extended by the mercy of the Supreme Lord, who is able to nullify the results of ones karma. Karmani nirdahati kintu ca bhakti-bhajam [Bs. 5.54]. This is the statement of Brahma-samhita (5.54). A devotee is not under the laws of karma. Therefore even a devotees scheduled death can be avoided by the causeless mercy of the Supreme Lord. God protects the devotee even from the extreme danger of death.