And Tyrus did build herself a strong hold, and heaped up silver as the dust, and fine gold as the mire of the streets. And Tyrus did build herself - The rock on which Tyre was built was strongly fortified; and that she had abundance of riches has been already seen, Ezekiel 28:1, etc.
Related Commentaries of Zechariah 9:3
Zechariah 9:3
3 And Tyrus did build herself a strong hold, and heaped up silver as the dust, and fine gold as the mire of the streets.