The Land of Nod is only mentioned once in the Bible, as the place Cain settled after killing Abel and being banished from the area of Eden. The Hebrew name is also the root word of the verb “to wander,” and some translations call it “the Land of Wandering.”
Swedenborg says the spiritual meaning reflects this – that living in the Land of Nod meant that the ideas represented by Cain and the people holding them would be spiritual wanderers, disconnected from the true love of the Lord and the true ideas that flow from that love.
Passages from Swedenborg
Arcana Coelestia (Elliott) n. 398
398. ‘Going out from the face* of Jehovah’ means being separated from good present in faith and flowing from love – see what has been mentioned already at verse 14. ‘He dwelt in the land of Nod’ means outside truth and good. This is clear from the meaning of the name Nod, which is being a wanderer and a fugitive. As for a wanderer and a fugitive meaning someone who has been divested of truth and good, again see what has been mentioned already.