Yahweh explains that this will be an easy road back from the Exile. There will be food along the way and plenty of pastures. They will not be hungry or thirsty. There would be no scorching wind or dangerous sun to strike them with sun stroke. People will take pity on them, and lead them to springs of water. The mountains will become easy roads, while highways will appear out of nowhere.
Yahweh, maintaining the first person singular in Second Isaiah, says that he will provide water for the thirsty poor people and the parched needy ones. He would not forget them, but he would answer them. He will open up rivers on the bare trails. He will open up fountains of water in the valleys. In fact, he will make the great desert wilderness like a pool of water. There will be springs of water where there was a dry land area. Don’t worry about water! Yahweh will take care of things.