In the middle of his sleep, the monk heard a loud knocking at his door. He was confused as no one should be up at that hour, and no one should be knocking at his door.

He waited.

The knock came again.

He got out of his bed, went to the door, the knock came a third time as he was about to open it.

He opened the door.

No one was there.

He walked out, looked around the small enclosure that framed his doorway. There was no one there.

Returning to his bed, he felt a cold fear come over him.

He lit the candle by his table, opened his bible to the psalms, and read his courage back to him:

I was glad when they said unto me, Let us go into the house of the Lord.

 Our feet shall stand within thy gates, O Jerusalem.

 Jerusalem is builded as a city that is compact together:

Whither the tribes go up, the tribes of the Lord, unto the testimony of Israel, to give thanks unto the name of the Lord.

 For there are set thrones of judgment, the thrones of the house of David.

 Pray for the peace of Jerusalem: they shall prosper that love thee.

Peace be within thy walls, and prosperity within thy palaces.

 For my brethren and companions’ sakes, I will now say, Peace be within thee.

 Because of the house of the Lord our God I will seek thy good.