Food shortages, earthquakes, moral corruption and wars are clear signs of a looming Armageddon, according to Jehovah’s Witnesses. People should be alert, they say, and if you’re ready, a heavenly kingdom awaits after this world ends.

With 1.3 million members in the U.S. and Canada, Jehovah’s Witnesses reported the fastest growth rate — 2.25 percent — of all churches, a survey says. The denomination ranks 24th among a list of the nation’s 25 largest.