As is known, the Gaon saw his great mission in the verse: the voice of the turtle-dove. It appears in the verse: the songbirds time has arrived; the voice of the turtle-dove is heard in our land. The voice of the turtle-dove refers to Joshua. The turtle-dove is Moshe Rabbeinu (as mentioned above in Chapter 2, 14, the aspect of the voice of the turtle-dove.At first the Gaon considered himself from the aspect of Joshua, as is hinted at in the Torah on the verse a perfect weight (end of parshat Ki Tetzeh), referring to . Following this verse is the section on destroying Amalek, which is the mission of Joshua, that is, from the left side. Thus this is the mission of Mashiach ben Yosef (see commentary of the Gaon on Tikunei Hazohar, p.27 on the verse, [Song 2:6] his left hand under my head. The Gaon also writes that the perfect weight is from the left side (that is, from the quality of Din). Immediately after the verses on Amalek, the Torah speaks of coming to the land of Israel. Since the Gaon then considered himself to be from the side of Joshua, that is from the aspect of Mashiach ben Yosef, he traveled to the Holy Land. However, on the way, he rose to the level of the sefira Tiferet, the level of Moshe Rabbeinu, may he rest in peace. Then the Gaon saw his name hinted at in a verse that refers to Moshe Rabbeinu, may be rest in peace: [Isa. 54:7]  with abundant mercy I will gather you and realized that the gematria of the verse equals that of his name [ ! equals 606] (see section 7 of this chapter). Likewise : in gematria equals 606.