Hew ye down trees - Rather, her trees: for the simple purpose of clearing the approaches.
Cast a mount - literally, pour: the earth was emptied out of the baskets, in which it was carried to the required spot upon the backs of laborers.
Wholly - Or,
“She “is the city” that is visited:
“Wholly oppression” is “in the midst of her!”
She is visited, - i. e., punished; she is ripe for punishment.