One of the most famous Mizmoreh Tehilim that we say is (chapter 130) שִׁ֥יר הַֽמַּעֲל֑וֹת מִמַּעֲמַקִּ֖ים קְרָאתִ֣יךָ ה ׳ A song of the Ascents, From the depths I call out to you Hashem There is a famous Chazal called Perek Shira, which goes through all the different songs that each creation sings. Everything in the world sings a song of praise to God, and we can learn a lot by figuring out why each creation sings what it sings. In chapter three of Perek Shira, the song of the wheat kernel is described. The wheat kernel sings this mizmor , שִׁ֥יר הַֽמַּעֲל֑וֹת מִמַּעֲמַקִּ֖ים קְרָאתִ֣יךָ ה ׳ A song of the Ascents, From the depths I call out to you Hashem Why does the wheat kernel sing this song? Rav Chaim Kanievsky, in his commentary on Tehilim, explains that wheat is an example of something that, once planted, begins rotting, but then, out of the rotting comes something that's more powerful than what you put in. You put in one grain and you get out a whole payload. What's the message? That even in the depths of the earth, which symbolize the depths of one's difficulties, if someone calls out to God, He will take him out of his problems. He'll bring him success. The wheat symbolizes that, because the wheat kernel produces bread, which is man's staple. Rav Kanievsky adds that the Yerushalmi ( in Masechet Avodah Zara) tells us that the average the average plant grows 3 hand- fists under the ground, but wheat grows 50 cubits underground, which is much, much deeper than the average growth. That is why wheat, out of all the vegetation, is chosen to say “ from the depths,” and that's why when we speak about our berachot , there's a difference between Hamotzi Lechem Min Haaretz and Boreh Peri HaAdamah . He says the term HaAretz refers to the depths whereas Adamah is the higher, more superficial layer. So the other vegetables come from Adamah and the Lechem comes Min Haaretz . The message is that out of the depths, from the rotting and seeming deterioration is where the growth comes. That's why we say Et Semach David/ the growth of David Hamelech . We talk about the development of Mashiach Ben David as a growth. We talk about Boneh Yerushalayim as a building , but we also talk about growth . The symbolism of growth is that it comes when things are deteriorating. Growth comes when it looks like things are just being ruined, and we don't see any development. That's the way growth comes about- only through deterioration. And that's why we sing this song of Shir Hamaalot/A song from the depths, to realize that that's where growth comes from. The commentaries say that we sit on the floor we sit on the floor on Tisha B’Av- to symbolize that we're going down. But then, in the middle of the day, at Hatzot, we get up- because as we know, it says Mashiach is being developed on Hatzot of Tisha B’Av. Just at the point where we're going down and seemingly rotting and deteriorating, that's where Hashem is preparing the future growth. That's the message of the wheat kernel, and that's the psalm of Shir HaMaalot Karaticha/from the depths I call to You Have a wonderful day.