Arcana Coelestia # 1187
1187. 'He built Nineveh, and Rehoboth city, and Calah' means that in this way they formulated for themselves doctrinal teachings concerning faith. This is clear from the meaning of 'Nineveh and Rehoboth and Calah', to be dealt with in the paragraphs following immediately after this, and from the meaning of 'a city' in the Word, as doctrine, true or heretical, as shown already in 402.
Isaiah 19:23-25
23
In that day there will be a highway out of Egypt to Assyria, and the Assyrian shall come into Egypt, and the Egyptian into Assyria; and the Egyptians will worship with the Assyrians.
24
In that day, Israel will be the third with Egypt and with Assyria, a blessing in the midst of the earth;
25
because Yahweh of Armies has blessed them, saying, "blessed be Egypt my people, Assyria the work of my hands, and Israel my inheritance."