In the titles of some of David's psalms: Psalm 16; Psalm 56-60. Not "golden" as margin, but a "secret," conducting us into the depths of the divine life, "the secret of Jehovah" which is "with them that fear Him" (Psalm 25:14); from Hebrew "katham" to conceal, Arabic katama. David delighted in enigmatical titles. Less pointedly Gesenius explains it "writing," miktab (Isaiah 38:9).