Jesus informs John that Gentile pagans will have their diabolical way in Jerusalem for the last half (42 months divided by 12 equals three-and-a-half years) of the about-seven year Tribulation period, the latter closing out the Church Age. The Church Age began with the First Coming of Christ. The Church Age will conclude with the Second Coming of Christ. The “trampling” includes the AntiChrist desecrating the next Temple to be constructed as well as laying low by his armies’ might the city of Jerusalem.