Her sister Oholibah saw this, yet in her lust and prostitution she was more depraved than her sister.
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
And when her sister Aholibah saw this,.... The two tribes of Judah and Benjamin, when, they saw the idolatries the ten tribes fell into, and the destruction which came upon them for the same; instead of receiving instruction, and taking caution by all this, she was more corrupt in her inordinate love than she; in courting the friendship, alliance, and help of their Heathen neighbours...
Judah, the southern kingdom, though having the "warning" (see on Eze 23:10) of the northern kingdom before her eyes, instead of profiting by it, went to even greater lengths in corruption than Israel. Her greater spiritual privileges made her guilt the greater (Eze 16:47, Eze 16:51; Jer 3:11).