This has been prophesied by Isaiah about 700 B.C. What will that look like? Should we take that literally or figuratively?
John Liu has proven that deserts can literally blossom through good ecological management. It’s interesting that he applies Biblical principles, such as allowing the land to rest for several years. See Leviticus chapter 25.
For a beautiful contemporary example, see the Löss-plateau in China. (Environmental Education Media Project by John D. Liu.)
PS: for an extensive study about the prophecy by the prophet Isaiah, see the study Desert will blossom