G2807 — kleis
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
kleis — pronounced klice
from 2808; a key (as shutting a lock), literally or figuratively:--key. see GREEK for 2808
6 occurrences in the KJV.
Matthew 16:19
And I will give unto thee the keys of the kingdom of heaven: and whatsoever thou shalt bind on earth shall be bound in heaven: and whatsoever thou shalt loose on earth shall be loosed in heaven.
Luke 11:52
Woe unto you, lawyers! for ye have taken away the key of knowledge: ye entered not in yourselves, and them that were entering in ye hindered.
Revelation 1:18
I am he that liveth, and was dead; and, behold, I am alive for evermore, Amen; and have the keys of hell and of death.
Revelation 3:7
And to the angel of the church in Philadelphia write; These things saith he that is holy, he that is true, he that hath the key of David, he that openeth, and no man shutteth; and shutteth, and no man openeth;
Revelation 9:1
And the fifth angel sounded, and I saw a star fall from heaven unto the earth: and to him was given the key of the bottomless pit.
Revelation 20:1
And I saw an angel come down from heaven, having the key of the bottomless pit and a great chain in his hand.