So they waited till they were embarrassed, and still he had not opened the doors of the upper room. Therefore they took the key and opened them. And there was their master, fallen dead on the floor.

The key of the house of David I will lay on his shoulder; So he shall open, and no one shall shut; And he shall shut, and no one shall open.

And I will give you the keys of the kingdom of heaven, and whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven.”

“Woe to you lawyers! For you have taken away the key of knowledge. You did not enter in yourselves, and those who were entering in you hindered.”

I am He who lives, and was dead, and behold, I am alive forevermore. Amen. And I have the keys of Hades and of Death.

The Faithful Church

“And to the angel of the church in Philadelphia write, ‘These things says He who is holy, He who is true, “He who has the key of David, He who opens and no one shuts, and shuts and no one opens”:

Fifth Trumpet: The Locusts from the Bottomless Pit

Then the fifth angel sounded: And I saw a star fallen from heaven to the earth. To him was given the key to the bottomless pit.

Satan Bound 1,000 Years

Then I saw an angel coming down from heaven, having the key to the bottomless pit and a great chain in his hand.