'A palace,' as in Psalm 144:12, represents the understanding in which truths have a beautiful form. They have a beautiful form when they are from...
'Mizraim' signifies the same thing as Egypt.
'Hills' signify the good of charity.
'Samaria,' as in Amos 4:1. 6:1, signifies the spiritual church perverted.
'Middle' denotes what is primary, principal, or inmost.