“While they portend (‘see') vain things for you, while they divine lies to you, to lay you on the necks of the wicked who are mortally wounded, whose day is come, in the time of the iniquity of the end.”
The Ammonites have resorted to divination and have ‘seen' lying prophecies and false visions which portend misery and destruction on the remnants of Jerusalem, the idea then being that they themselves have to fulfil it. In other words it is their intention to benefit by the situation. Thus they plan to pile up the survivors on the necks of those already slaughtered, ‘the wicked who are mortally wounded, whose day is come, in the time of the iniquity of the end' (Ezekiel 21:25). This latter quotation stresses the finality of the misery that has come on Jerusalem, and God sees it as enough. The Ammonites have no right therefore to inflict further misery on them. They are still under God's eye.