A Complete full stop.... Many Sayings

Many have predicted apocalypse at the hand of God, war or aliens
Since the dawn of time, humankind has pondered when time will end. Knowing nothing lasts forever, hundreds, if not thousands of philosophers, scientists, religious leaders and everyday laymen have proposed their own ideas on the eventual demise of humanity.
Religion often goes hand in hand with apocalyptic forecasts. Just as many beliefs have their own creation story, their teachings usually conclude with a story about humankind's or even the Earth's final end. Possibly the most famous of all the end of the world predictions is the "Biblical Book of Revelations."
Many organizations travel around the world preaching their interpretation of "Revelations" to the masses. One such organization, the Sure Word Ministries, recently visited Tallahassee. A flyer describing their 10-night event detailed such sermons as "How Near is Armageddon and the End," "666 Part 1 and Plagues Upon the Land" and "Revelation's False Prophet and his Cult Leaders."
Surprisingly, one of the first "doomsday prophesies" predated the writing of the Bible. According to The Interactive Bible's online library of date setters of the end of the world, the ancient Thessalonians had heard Christ had returned in A.D. 53 and that "the day of the Lord was near."
The online library also lists other organizations that have attempted to warn the world of its impending conclusion. The Jehovah's Witnesses, for example, have issued predictions the world would end in 1874, 1878, 1881, 1910, 1914, 1918, 1925, 1975 and 1984.
Another organization, the Jack Van Impe Ministries, predicted disaster in 2001, bringing in "international chaos such as we've never seen in our history." They further added that there will be "drought, war, malaria and hunger afflicting entire populations throughout the (African) continent," Islam would be larger than Christianity and "a one-world church will emerge, controlled by demonic hosts."
Sometimes interpretations of the Bible have directly led to conflict. The online library discusses a 16th Century German peasant named Muntzer who, along with a group of followers, thought attacking the German government would cause God to return. Muntzer believed "the Lord promised that He would catch the cannon balls of the enemy on the sleeves of His cloak." As could be predicted, Muntzer's rebellion was suppressed when they were "mowed down by cannon fire."
Even modern conflict has coincided with apocalyptic predictions. In 1991, Nation of Islam Leader Louis Farrakhan called the Gulf War "the War of Armageddon ... the final War."
Visitors from outer space have been cited as the future cause for the end of humankind, as well.
According to a Web site appropriately named "It's the end of the world as we know it ... again" (www.geocities.com/Athens/Oracle/9941), The Sacerdotal Knights of National Security announced in November 1997 that an alien had been captured. This alien cracked under CIA interrogation and "revealed his species' nefarious plan to attack with a massive space invasion force, stripping the world of every last of its natural resources and enslaving all humankind."
Opinions on the types of aliens that are planning to invade vary. California psychic Sheldon Nidle claimed that angels would join the "16 million spaceships" arriving on Earth in 1996. In stark contrast, Robert Hallman called the extraterrestrials who were planning to destroy the world in 1998 "Satan's minions."
Finally, it must be noted that even the most respected historical figures have tried their hand in doomsday predictions. Sir Isaac Newton, famous for his writings on the Law of Gravity, not only wrote that Christ would return in 1715, but according to recent news reports, he also concluded the apocalypse would occur in 2060. Newton further predicted he would be one of the many saints to rule over the earth after this apocalypse.