Where it appears

• Matt 16:19I will give to you the keys of the Kingdom of Heaven, and whatever you bind on earth will have been bound in heaven; and whatever you release on earth will have been released in heaven.”
• Luke 11:52Woe to you lawyers! For you took away the key of knowledge. You didn’t enter in yourselves, and those who were entering in, you hindered.”
• Rev 1:18and the Living one. I was dead, and behold, I am alive forever more. Amen. I have the keys of Death and of Hades.
• Rev 3:7“To the angel of the assembly in Philadelphia write: “He who is holy, he who is true, he who has the key of David, he who opens and no one can shut, and who shuts and no one opens, says these things:
• Rev 9:1The fifth angel sounded, and I saw a star from the sky which had fallen to the earth. The key to the pit of the abyss was given to him.
• Rev 20:1I saw an angel coming down out of heaven, having the key of the abyss and a great chain in his hand.