The House of Justice points out that Bahá'u'lláh in no uncertain terms has said 'O ye peoples of the world! Know, verily, that an unforseen calamity followeth you, and grievous retribution awaiteth you. Think not that which ye have committed hath been effaced in My sight.' Therefore it considers that it would be fruitless to attempt to foresee the time or the nature of a calamity which Bahá'u'lláh Himself said was 'unforseen'. No doubt the remarkable progress being made in scientific endeavour holds true in the study by experts of geological upheavals. But we cannot be certain that predictions of earthquakes, volcanic eruptions or tidal waves caused by such phenomena can be identified as the cataclysmic events to which Bahá'u'lláh refers.
In letters to other believers who have asked questions similar to yours, the House of Justice has emphasized that the friends should not waste their time and energies in fruitless speculations on this question. Rather, they should concentrate every ounce of energy on the winning of the goals of the Five Year Plan, which they have clearly before them, confident in the knowledge that whatever may happen in the world, however calamitous it may outwardly appear, will promote God's unalterable purpose for the unification of mankind.
- The Universal House of Justice (From a letter written on behalf of the Universal House of Justice to an individual believer, June 2, 1976; compilation: ‘Lights of Guidance’)