Sechok appears 15 times in the Hebrew Bible, covering the full spectrum of laughter: joyful laughter (Proverbs 14:13), playful sport (Proverbs 26:19), painful laughter covering hidden grief (Proverbs 14:13), and bitter derision (Job 12:4; Lamentations 3:14). The same root gives us the name Isaac (Yitzhak — 'he laughs'), born from Sarah's incredulous laugh at God's promise of a child in her old age.
Sechok carries profound theological ambiguity. Sarah's laugh of disbelief (Genesis 18:12-13) became the name of the child of promise — God literally 'had the last laugh.' Ecclesiastes explores the emptiness of sechok when disconnected from God (2:2). Yet Proverbs 31:25 describes the virtuous woman laughing at the future — confident, not fearful, laughter rooted in trust. The eschatological promise of Psalm 126:2 declares that when the LORD restores Zion, 'our mouths were filled with laughter [sechok].' Joy fully restored is the ultimate form of divine sechok.