One of the areas the Bible offers insight and revelation is about the future - last days. The disciples asked Jesus about the End times.
Luke 21:10-11 GNT He went on to say, Countries will fight each other; kingdoms will attack one another. 11 There will be terrible earthquakes, famines, and plagues everywhere; there will be strange and terrifying things coming from the sky. John alerting Believers to be on lookout for enemies who are coming and those who are here.