Messianic Prophecy: Messiah will receive the key of David:

Prophecy:

“Then I will set the key of the house of David on his shoulder,
When he opens no one will shut,
When he shuts no one will open.

Isaiah 22:22

Fulfillment:

“And to the angel of the church in Philadelphia write:
He who is holy, who is true, who has the key of David, who opens and no one will shut, and who shuts and no one opens, says this:

Revelation 3:7