Keys

KEYS - In almost all cultures, the key symbolizes special privilege to access an exclusive area like the kingdom of heaven.  In the Holy Bible the "Key of David" symbolizes spiritual knowledge.

(KJV Isaiah 22:22) - And the key of the house of David will I lay upon his shoulder; so he shall open, and none shall shut; and he shall shut, and none shall open.

(KJV Rev 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;