David, Key of

Christ according to Apocalypse 1, has the Key of David. The expression is suggested by Isaias 22, where Eliacim is represented as having "the Key of the house of David" slung over his shoulder, as a symbol of power. Christ is set over the House of God (Ephesians 1; Hebrews 3), and exercises all authority in heaven and on earth (Matthew 28) and even in the nether world (Apocalypse 1). The reference to David recalls the prophecies fulfilled in the exaltation of Christ.