Hai
In Joshua 8:1-29, Ai signifies knowledge of good, and in the contrary sense confirmations of evil. (Apocalypse Explained 655[8])
In Genesis 12:8, Ai signifies part of the Lord's fourth state in advancing from obscurity to light. (Arcana Coelestia 1401)
In Genesis 12:8, Ai signifies that the Lord's state was still obscure, for Ai signifies the knowledges of worldly things, in spite of being on the east. (Arcana Coelestia 1453)
Jeremiah 49:3-4
3
Wail, Heshbon, for Ai is laid waste; cry, you daughters of Rabbah, clothe yourself in sackcloth: lament, and run back and forth among the fences; for Malcam shall go into captivity, his priests and his princes together.
4
Why do you glory in the valleys, your flowing valley, backsliding daughter? who trusted in her treasures, [saying], Who shall come to me?