Jesus teaches us that no one knows the exact time of His return - not even Himself during His earthly ministry. Rather than obsessing over end-times calendars, we're called to spiritual vigilance and mission focus. Like a doorkeeper watching through the difficult night hours, we must guard against spiritual drift and autopilot living. Our responsibility isn't to speculate about when Christ will return but to fulfill our calling while there's still opportunity. Jesus redirects our attention from dates to duties, from timelines to testimony, reminding us to stay awake and alert in uncertain times.