Adam Clarke on Ezekiel 16:46

Thine elder sister is Samaria, she and her daughters that dwell at thy left - It is supposed that the prophet by Sodom in this place means the Israelites that dwelt beyond Jordan, in the land or the Moabites and Ammonites; or rather of the Moabites and Ammonites themselves. Literally, Sodom could not be called the younger sister of Jerusalem, as it existed before Jerusalem had a name. In looking east from Jerusalem, Samaria was on the left, and Sodom on the right hand; that is, the first was on the north, the second on the south of Jerusalem.