In January 1943, warm Chinook winds hit Spearfish, South Dakota, raising the temperatures from –4° to 45°F (–20° to 7° C) over a two-minute span. That drastic weather change—a swing of 49 degrees—took place in just two minutes. The widest temperature change recorded in the USA over a 24-hour period is an incredible 103°F (57°C). On January 15, 1972, Loma, Montana, saw the temperature jump from −54° to 49°F (–48° to 9°C).
Sudden change, however, is not simply a weather phenomenon. It is sometimes the very nature of life. James reminds us, “Now listen, you who say, ‘Today or tomorrow we will go to this or that city, spend a year there, carry on business and make money.’ Why, you do not even know what will happen tomorrow” (4:13–14). An unexpected loss. A surprise diagnosis. A financial reversal. Sudden changes.
Life is a journey with many unpredictable elements. This is precisely why James warns us away from “arrogant schemes” (v. 16) that do not take the Almighty into account. As he advised us, “You ought to say, ‘If it is the Lord’s will, we will live and do this or that’” (v. 15). The events of our lives may be uncertain, but one thing is sure: through all of life’s unexpected moments, our God will never leave us. He is our one constant throughout life.
Source: Our Daily Breat
Baptist Bible Hour 
Your Watchmen on the Wall