“Therefore, stay awake, for you do not know on what day your Lord is coming.” (Matthew 24:42, ESV) Recently, my sleep was interrupted by a single beep. Then long seconds of silence. Did I really hear something? Beep. More silence. Finally, I forced myself out of bed to find the source of the annoying beep. I suspected a dead battery in either the smoke alarm or the carbon monoxide detector. I knew I was safe, but I needed to take care of the alarm. The next time, it might signal a real emergency. We are surrounded by a variety of…