The Key of the House of David

In Isaiah 22, we read an intriguing prophecy where God takes an unusual interest in not the king but and official of the royal house of Judah. The official is said to have "the key of the house of David", and he opens and no one shuts and he shuts and no one opens. Who was this royal official? What was his official title, and what did his work entail? For the answers, request a copy of the tract ‘The Key of the House of David.The KEY has since passed to a Divine Personage, a higher-than-David Son of David!