In Isaiah 22, who will have the key to the house of David placed on his shoulder?

Answer: Eliakim son of Hilkiah

God promises to summon His servant Eliakim son of Hilkiah: "What he opens no one can shut, and what he shuts no one can open."

“On that day I will summon My servant, Eliakim son of Hilkiah.”— Isaiah 22:20 (BSB)