Adam Clarke on Ezekiel 23:2

Son of man, there were two women - All the Hebrews were derived from one source, Abraham and Sarah; and, till the schism under Rehoboam, formed but one people: but as these ten tribes and a half separated from Judah and Benjamin, they became two distinct people under different kings; called the kingdom of Judah, and the kingdom of Israel. They are called here, because of their consanguinity, two sisters. The elder, Samaria, (for there was the seat of government for the kingdom of Israel), was called אהלה aholah, "a tent." The younger, Judah, was called אהליבה aholibah, "my tent is in her," because the temple of God was in Jerusalem, the seat of the government of the kingdom of Judah.