Key of David

Revelation 3:7
[ To the Church in Philadelphia ] "To the angel of the church in Philadelphia write:These are the words of him who is
holy and true, who holds the key of David. What he opens no one can shut, and what he shuts no one can open.

Isaiah 22:22
I will place on his shoulder the key to the house of David; what he opens no one can shut, and what he shuts no one can open.