The gravelly-voiced captain announced yet another delay. Crammed in my window seat aboard a plane that had already sat unmoving for two hours, I chafed in frustration. After a long workweek away, I longed for the comfort and rest of home. How much longer? As I gazed out the raindrop-covered window, I noticed a lonely triangle of green grass growing in the gap of cement where runways met. Such an odd sight in the middle of all that concrete.

As an experienced shepherd, David knew well the need to provide the rest of green pastures for his sheep. In Psalm 23,…