And I will make the land desolate repeats the ideas of 14.15-16 (see the comments there), although here God directly causes the desolation.

Because they have acted faithlessly: See 14.13. Good News Translation places this clause before the previous one, saying “They have been unfaithful to me, and so I will make the country a wilderness.” Other languages may find this helpful.

Says the Lord GOD: This solemn pronouncement emphasizes that God speaks these words. For the Lord GOD, see Ezek 15.6. Here this clause may be rendered “This is what the Lord Yahweh has declared.”

Quoted with permission from Gross, Carl & Stine, Philip C. A Handbook on Ezekiel. (UBS Helps for Translators). Miami: UBS, 2016. For this and other handbooks for translators see here .