Upper. Cross

• upper. Cross ... castle Knock: Thom's Official Directory (1903), page 1653: "Chapelizod, a village partly in Palmerstown parish, Uppercross barony, but chiefly in the parish of the same name, Castleknock barony."

• cross: do the children cross the bridge at Chapelizod?

• castle. Knock: to knock on the castle door in order to gain admittance
• psychopomp and crossing the upper bridge: after death, a psychopomp such as Mercury, St. Michael, Daena (Zoroastrianism) leads the soul across a bridge (the Chinvat in Zoroastrianism) to enter the castle of heaven. (ech)
• knocking on heaven's door: after crossing to the other side, they (Pearse and the Angel leading him) to a castle (heaven) and he knocks on the door of heaven. He is asked for a password. He gives his own name. It does not appear he was admitted. His time is not yet. There is a notion in esoteric theory that at our deepest state of sleep with either merge with universal consciousness or come to that point where we make contact with heaven. This is that point with HCE. But his castle expires. we return to his dream.
• Knocking in the Bible:

 - Matthew 7:7 "knock and it will be opened to you" (i.e., the kingdom of heaven).  Here it is not.
 - Luke 13:25-27: "Once the head of the house gets up and shuts the door, and you begin to stand outside and knock on the door, saying, 'Lord, open up to us!' then He will answer and say to you, 'I do not know where you are from.' "Then you will begin to say, 'We ate and drank in Your presence, and You taught in our streets'; and He will say, 'I tell you, I do not know where you are from; DEPART FROM ME, ALL YOU EVILDOERS.'
 - Acts: 12:13-16 "When he knocked at the door of the gate, a servant-girl named Rhoda came to answer. When she recognized Peter's voice, because of her joy she did not open the gate, but ran in and announced that Peter was standing in front of the gate. They said to her, "You are out of your mind!" But she kept insisting that it was so. They kept saying, "It is his angel."