And I saw that she too had defiled herself; both of them had taken the same path.
The prophet Hosea, in his time, observed that the two tribes retained their integrity, in a great measure, when the ten tribes had apostatized (Hos 11:12, Ephraim indeed compasses me about with lies, but Judah yet rules with God and is faithful with the saints; and this was justly expected from them: Hos 4:15, Though thou Israel play the harlot, yet let not Judah offend); but this lasted not long.
Commenting on Ezekiel 23:11-21
Then I saw that she was defiled,.... With idols, and the worship of them, Eze 23:7, that they took both one way; the same way of idolatry; worshipped the same idols, lived the same course of life, were guilty of the same sin, both Israel and Judah.
one way--both alike forsaking God for heathen confidences.