13 Come now, you who say, “Today or tomorrow we will go into such and such a town and spend a year there and trade and make a profit”— 14 yet you do not know what tomorrow will bring. What is your life? For you are a mist that appears for a little time and then vanishes. 15 Instead you ought to say, “If the Lord wills, we will live and do this or that” (Jas 4:13-15).
Anton Yelchin, best known as Chekov in the Star Trek reboots, and the hapless, doomed murder victim in Alpha Dog, was killed in a freak accident at age 27.
This is a reminder that we can die in a flash. Many enjoy a normal lifespan, but that's just a statistical average. You can die in your prime. He didn't even die from a drug overdose, or cancer, or rock-climbing, or mountain-biking. It was completely unpredictable.
We should be prepared to die at anytime–because we may.