Jesus' disciples were curious to know what the end of the ages would be like. He told them. God's people throughout the ages have wanted to know with certainty the hope of their salvation and God speaking through his various prophets has provided insights. He however has chosen to use prophetic language which is rich in symbols and the like and unfortunately is an area of confusion.
When is the rapture? Pre or post tribulation? Will Jesus come back visibly or secretly? What will happen during the tribulation? Who or what is the Antichrist? The Beast (666)? This article helps to provide a few clear lamp posts that Jesus left us with, in what can be murky waters.