4th O Antiphon

O Key of David,
O Royal Power of Israel
Controlling at your will the gate of heaven:
Come, break down the prison walls of death
for those who dwell in darkness and the shadow of death;
and lead your captive people into freedom
Isaias 22:22

And I will lay the key of the house of David upon his shoulder: and he shall open, and none shall shut: and he shall shut, and none shall open.

Isaias 9:6

For a child is born to us, and a son is given to us, and the government is upon his shoulder: and his name shall be called Wonderful, Counsellor, God the Mighty, the Father of the world to come, the Prince of Peace.