The fields of Heshbon languish; either for want of rain, as Isaiah 15:6, or because there are no men left to till and manure them. The lords of the heathen; the Assyrians or Chaldeans, the great rulers of the Eastern nations. The principal plants; the choicest vines; under which one particular he seems to understand not only all other fruits and goods, but even their persons and choicest people. They are come even unto Jazer; either,
1. The lords of the heathen are come as far as Jazer, which is the utmost border of Moab; or,
2. The people of Moab are going into captivity, and part of them are already gone as far as Jazer. Some understand this and the following clauses of the vines, which are here commended, to aggravate the loss and ruin of them, and render the words, which reached even unto Jazer, which vineyards were planted for many miles together, even as far as Jazer. They wandered through the wilderness; others of the Moabites fled away for their lives, and wandered hither and thither in the wilderness of Moab; of which see Numbers 21:11 Deuteronomy 2:8. Her branches, i.e. her people, called plants before. Are stretched out; or, are spread abroad, as this word signifies, Numbers 11:32 Judges 15:9 1 Samuel 30:16; are driven from their own homes, and dispersed into several countries. Over the sea; over the Dead Sea, which was the border of Moab. They were forced to flee out of their own country to save their lives.