Easton's Bible Dictionary (1897)
, comptroller or governor of the palace. On account of his pride he was ejected from his office, and Eliakim was promoted to it (Isa. 22:15-25). He appears to have been the leader of the party who favoured an alliance with Egypt against Assyria. It is conjectured that “Shebna the scribe,” who was one of those whom the king sent to confer with the Assyrian ambassador (2 Kings 18:18, 26, 37; 19:2; Isa. 36:3, 11, 22; 37:2), was a different person.
Smith's Bible Dictionary (1863)
(vigor), a person of high position in Hezekiah’s court, holding at one time the office of prefect of the palace, (Isaiah 22:15) but subsequently the subordinate office of secretary.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
SHEB'NA (youth). The "treasurer," or prefect of the palace of Hezekiah, Isa 22:15-25, a man of great pride, but whose ignominious fall is prophesied by the prophet. The scribe or secretary of Hezekiah; a different person from the preceding, though with the same name. Isa 36:3; 2 Kgs 18:18 2 Kgs 18:37; 2 Kgs 19:2. He was one of the ambassadors sent to Rabshakeh.
Hitchcock's Bible Names (1869)
who rests himself; who is now captive