Likutei Sichos vol 27 page 191 ff. Class One. The question: how to resolve the opinion of RaMbaM that Moshiach is a natural time with the Toras Kohanim and Gemara in Kesubos that barren trees will bear fruit? First attempted answer: The Radbaz, the difference between Eretz Yisroel and the entire world. Second attempted answer: The Avodas Hakodesh, the barren trees bearing fruit is “simply” going back to to how it was prior to the original sin of Adam and Chava.
