When I was a boy, a plaque in our home was inscribed with the words “This is the day which the LORD hath made; we will rejoice and be glad in it.” Apart from the change from “hath” to “has,” similar words are preserved in the NIV of Psalm 118:24.
My father gently applied this text to his children when we whined or complained about little nothings. Was the weather too hot and sticky? “This is the day which the LORD has made; we will rejoice and be glad in it.” Were the skies pelting rain, so we could not go out to play? “This is the day the LORD has made; we will rejoice and be glad in it.” What a boring day (or place, or holiday, or visit to relatives)! “This is the day the LORD has made; we will rejoice and be glad in it.” Sometimes the words were repeated with significant emphasis: “This is the day the LORD has made; we will rejoice and be glad in it.”
It is not that Dad would not listen to serious complaints; it is not that Scripture does not have other things to say. But every generation of Christians has to learn that whining is an affront against God’s sovereignty and goodness.
But the text must first be read in its context. Earlier the psalmist expresses his commitment to trust in God and not in any merely human help (Ps. 118:8-9), even though he is surrounded by foes (Ps. 118:10). Now he also discloses that his foes include “the builders” (Ps. 118:22) — people with power within Israel. These builders were quite capable of rejecting certain “stones” while they built their walls — and in this case the very stone the builders rejected has become the capstone. In the first instance this stone, this capstone, is almost certainly a reference to a Davidic king, perhaps to David himself. The men of power rejected him, but he became the capstone.
Moreover, this result was not achieved by brilliant machination or clever manipulation. Far from it: “the LORD has done this, and it is marvelous in our eyes” (Ps. 118:23). In his own day Isaiah portrays people who make a lie their refuge while rejecting God’s cornerstone (Isa. 28:15-16). The ultimate instance of this pattern is found in Jesus Christ, rejected by his own creatures, yet chosen of God, the ultimate building-stone, and precious (Matt. 21:42; Rom. 9:32-33; Eph. 2:20; 1 Peter 2:6-8) — a “stone” disclosed in all his true worth by his resurrection from the dead (Acts 4:10-11). Whether in David’s day or in the ultimate fulfillment, this marvelous triumph by God calls forth our praise: This is the day the LORD has made; let us rejoice and be glad in it (Ps. 118:24).
From For The Love of God by Don Carson