Hi doublelife and welcome!
I have ESV
what do most believe about Jesus second coming and armageddon. Do they happen at the same time or not?
According to traditional Christian interpretations, the Messiah, the "Lamb", will return to earth and defeat the Antichrist, the "Beast", in the battle of Armageddon. Then Satan will be put into the bottomless pit or abyss for 1,000 years, known as the Millennial age. After being released from the abyss, Satan will gather Gog and Magog from the four corners of the earth. They will encamp surrounding the holy ones and the "beloved city". Fire will come down from God, out of heaven and devour Gog and Magog at Armageddon, and the Devil who deceived them is thrown into Gehenna (the lake of fire and brimstone) where the Beast and the False Prophet have been since just before the 1,000 years. 
Read the last four chapters of the bible should do the trick, start here Revelation 19