Then Menahem smote Tiphsah, and all that were therein, and
coasts thereof from Tirzah
The Jewish writers commonly take this Tiphsah to be without the land of Israel, the same with that in ( 1 Kings 4:24 ) on the borders of Syria, and near the Euphrates; but it seems to be some place nearer Samaria, and Tirzah; according to Bunting F20, it was but six miles from Samaria:
because they opened not to him, therefore he smote
they refused to open the gates of their city to him, and receive him, and acknowledge him as their king; therefore he exercised severity on the inhabitants of it, and the parts adjacent, as far as Tirzah, putting them to the sword:
and all the women therein that were with child he ripped
which was a most shocking instance of barbarity, and which he did, to terrify others from following their example. Ben Gersom interprets it of strong towers built on mountains, which he demolished, deriving "haroth", which we render "women with child", from (rh) , "a mountain".