All churches teach one of three positions.
Soon the battle of Armageddon will start and the great tribulation will be upon the earth as the signs of the times usher in the return of Christ. The 1000 year reign of Christ upon the earth also follows soon after the last days began. The last days are defined as the continuous period of time from the ministry of Jesus to the second coming. Mankind has been living in the last days for 20 centuries. The year 2000 AD is significant because it is the beginning of the 7th millennium.