פירוש על מלכים ב 15:16

Because it would not open. The governor of the city did not open the city for him, to accept him as king over them.

"...and all the strongholds and towers in the mountains were ripped up."

From across Tirzah.

...He split open all the pregnant women as an act of vengeance and disgrace...

Its pregnant women. The pregnant women therein, he ripped open.

On the matter that the guards of Tiphsah did not open the gates of the city to gain entry to it. This is the reason he smote Tiphsah and it's borders that were across Tirzah.

He opened the stomachs of the pregnant women to extract their fetuses.