Arcana Coelestia #1202
1202. Because these cognitions are the primary things of such external worship which has no internal worship within it, 'Sidon' is called 'Canaan's firstborn'. This has just been explained in the previous paragraph.
Ezekiel 32:30
30
There are the princes of the north, all of them, and all the Sidonians, who are gone down with the slain; in the terror which they caused by their might they are put to shame; and they lie uncircumcised with those who are slain by the sword, and bear their shame with those who go down to the pit.