Isaiah 22The vice-king of the House of David wore around his neck a pouch containing a key, which represented his position as the king's vice-king or vice-regent.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.
Revelation 3Jesus is the eternal king of the House of David, and is "the power behind the key."7"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.
Matthew 16Jesus gives the key of the office of the vice-regency to Peter alone.19I will give you the keys of the kingdom of heaven; whatever you bind on earth will be[1] bound in heaven, and whatever you loose on earth will be[2] loosed in heaven."