ציטירנדיקער פּירוש אויף מלכים א 2:18

and Shimshai was the scribe And Shimshai was the scribe: he is Shimshai the son of Haman. So it is customary to mention the scribe and the secretary together because they need each other; one composes and dictates, and the scribe writes, as it says (I Kings 4:3): “Eliphoreph and Ahiah, the sons of Shisha, scribes, Jehoshaphat, the son of Ahlud, the secretary,” and in another place it says (Isa. 36: 22): “And Eliakim, the son of Hilkiah etc. and Shebna the scribe, and Joah, the son of Asaph the secretary, came.”