Midrash su Salmi 48:2

Another matter: “Your hair is like a flock of goats that streams down [shegaleshu] from Mount Gilad” (Song of Songs 4:1) – the mountain from whose midst you took away [shegelashten], I rendered a memorial for the nations of the world. Which is this? These are the priestly watches. What is it that you took away from its midst? “Your teeth are like a flock of ordered ewes” (Song of Songs 4:2) – defined matters, the twenty-four priestly watches, the twenty-four Levite watches, and twelve divisions.⁵⁴These were divisions of men who would come for a month at a time to perform whatever labors the king would assign them (Etz Yosef). “That have come up from bathing” (Song of Songs 4:2) – who protect Israel. “That are all paired” – as we learned there: At three times during the year all the priestly watches were equal (Sukka 55b). “And there is none missing among them” (Song of Songs 4:2) – as we learned: “The first, the head and the hind leg…” (Tamid 31a).⁵⁵Each of the priests had a role, and there were always enough priests to perform each task.
“Your lips are like a scarlet thread” (Song of Songs 4:2) – as we learned: [The High Priest] stooped to pour the libation, and the deputy waved the cloths, and ben Arza struck the cymbals (Tamid 33b).⁵⁶This was the sign for the Levites to begin their song in the Temple. “Your speech is lovely” (Song of Songs 4:2) – this is the song, as we learned there: The song that the Levites would recite in the Temple. On the first day they would recite: “The earth is the Lord’s and all it contains” (Psalms 24:1).⁵⁷The intention is that on Sunday the Levites would recite the entire chapter of Psalms beginning with this verse. The same is true for all of the citations cited here; one psalm was recited each day of the week. On the second day: “Great is the Lord and highly to be praised in the city of God…” (Psalms 48:2). On the third day: “God stands in the divine congregation” (Psalms 82:1). On the fourth day: “Lord God, to whom vengeance belongs, God to whom vengeance belongs, shine forth” (Psalms 94:1). On the fifth day: “Sing for joy to God, our strength; shout aloud to the God of Jacob” (Psalms 81:2). On the sixth day: “The Lord reigns: He is robed in majesty” (Psalms 93:1). On Shabbat they would recite: “A psalm, a song for the Shabbat day” (Psalms 92:1) – for the future, for the day that will be entirely Shabbat and rest for everlasting life.

Man or woman, who does any of the sins etc. - Rabi Abahu says (Hosea 14:8): 'Those that dwell under His shadow' those are the gerim that come and have love for the shadow of the Holy One of Blessing. 'They shall grow as grain' in [the study of] Talmud. 'Shall blossom as vine' in [the study of] Aggadah. 'His memory/scent shall be as the wine of Lebanon' - said the Holy One of Blessing: "The appreciation of the gerim is as dear to me as the wine that was poured on the altar [as libation.]" And why does He call it [the altar] Lebanon (root LVN)? Because it whitens (maLViN) the sins of Israel like snow, as it is written (Isaiah 1:18) 'though your sins be as scarlet, they shall be as white as snow.' Rabi Shimon Bar Yochai says: because all the hearts (LeVavot) become happy due to it. As it says (Psalms 48:2): 'Fair in situation, the joy of the whole earth.' And the rabbis say - because of the verse (II Kings 9:3) 'and My eyes and My heart shall be there perpetually.' Another interpretation: 'they will grow as grain' - they will make the essence, they are like Israel; as it is said (Zechariah 9:17) 'grain [for] the young men [of Israel]'. 'They shall blossom as vine', as [just like] Israel, as it says (Psalms 80:9) 'You plucked a vine from Egypt.' And so you find that, just as a portion of the Torah was written regarding one Israel and another - that if he misappropriated something of him, that he is obligated to a sacrifice, as it is written (Leviticus 5:21) 'If any one sin, and commit a trespass etc.' - so too you find that the Holy One of Blessing wrote a portion of the Torah regarding what goes on between Israel and gerim, that if a man from Israel steals from a ger, the judgement is as if he stole from another man from Israel. You find that regarding this it is written 'a sin that he sinned' and regarding stealing from a ger it is written 'from any sins of a man.' Regarding this one it is written 'and trespassed a trespass against the Lord' and regarding this one it is written 'to trespass a trespass against the Lord.' Regarding this one it is written: 'And it will be, when he sins and is guilty' and regarding the ger it is written 'and that soul will be guilty'. Regarding this one it is written: 'And he will pay with his head' and regarding the ger it is written 'and he will return his guilt with his head'. Regarding this one it is written: 'and he will add his fifth' and regarding the ger it is written 'and he will add a fifth'. Regarding this one it is written: 'and he will bring his guilt-offering to the Lord' and regarding stealing a ger it is written 'besides the ram for the kipurim'. Behold we have learned: that the essence of the gerim is like Israel's. Therefore, they will be as grain and blossom.