Likutei Moharan 152:2/ליקוטי מוהר"ן קנ״ב:ב׳

12. Study the Zohar, Terumah. It is brought in Pardes, Shaar HaTemurot, Chapter 2: “In the Holy Land, everything is rectified….” Study well that which is written there: “A thin curtain is spread out over the opening.” Based on the aforementioned esoteric teaching, this is the aspect of the God-fearing person. He corresponds to the “thin curtain.” And, as is brought there in the Zohar: Entry is impossible; and it is also impossible for the evil force to spread out over the opening because of the thin curtain. Study there. This is precisely what is written above concerning the God-fearing person. Consider this well and you will understand wonders.

2Study also the book Tuv HaAretz, which also speaks of the Land of Israel. Understand the matter well in order to compare one thing to another, for it is one with that which is mentioned above.