O Key of David, and sceptre of the house of Israel; who openest, and none closeth; who closest and none openeth: Come and draw out the convict from the prison-house who sitteth in darkness and the shadow of Death.
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. (St Matthew xvi.19)
We can find ourselves locked and bound to this life if we choose the yoke of this life. St Paul reminds us, "Know ye not, that to whom ye yield yourselves servants to obey, his servants ye are to whom ye obey ; whether of sin unto death, or of obedience unto righteousness?" (Romans vi.16) Man chooses whom to obey, puts his head into the yoke and locks himself in, dropping the key in the process.
Until there is another who has not put his head in the same yoke, no-one can pick up this key. It remains on the floor, just out of reach. Yet, in Bethlehem, in the City of David, there is one born whose yoke is easy, whose burden is light and who will pick up that key and give it to those who are willing to yoke themselves to a better master, the True Master.