In April of 2004 I was flying from Hong Kong to San Francisco. A couple hours into the flight I took a casual look at the flight data screen. My head snapped forward with amazement. The screen said that our plane was traveling 775 miles per hour, well past the speed of sound. Thanks to a 200-mile-per-hour tailwind, we had smoothly broken the sound barrier.
On October 14, 1947, Chuck Yeager prepared for his ninth flight in the experimental rocket plane Bell X-1. Each previous flight had edged closer to Mach 1, the never-crossed barrier beyond which human beings would fly faster than the speed of sound. It was dangerous, he knew. A British test pilot had perished when his aircraft disintegrated at Mach 0.94. Yeager, the fearless test pilot who would one day pilot a rocket plane out of the earth's atmosphere, climbed down into the X-1 as it lay in the airborne belly of the huge mother ship, a B-29. He snapped the cockpit cover shut using a sawed-off broom.
At 20,000 feet that rocket plane dropped out of the bomb bay with a jolt. All four rockets fired, causing the plane to shake violently. The Mach needle edged up past 0.965, and then it went off the scale. Thunderstruck, Yeager realized that he was flying supersonic. "It was as smooth as a baby's bottom: Grandma could be sitting up there sipping lemonade," he said later. His X-1 had accelerated to Mach 1.06, or 700 miles per hour. He half didn't believe it--until the tracking crew ran up and reported hearing the world's first sonic boom, a sound that marked the end of the Wright Brothers' era and the beginning of the space age.
According to our text, the emotions of "those who live on the earth" shifted suddenly from great rejoicing to great fear. In both cases the emotions were related to the future. When the two witnesses were dead, people foresaw no "torment" in their future. But the resurrection of the witnesses brought great fear. God's enemies had no idea what would happen to them.
Today we routinely break the sound barrier and hardly notice it, but Yeager had no way of knowing it would be that smooth. In an act of great courage he faced his fears and tried. Those who are on God's side don't have to be afraid of the future. We already know that the "sonic boom" at the end of time will not harm those who are sealed.
Lord, thank You for the assurance that we have nothing to fear for the future except we forget how You have led us in the past.