What is the first numbering machine in EVA? Why is there an s2 organ?

Eva trumpeter is a perfect replica of the second apostle Lilith. Neither Adam nor Eve. Lilith was Adam's first wife. Later, she left the Garden of Eden because she didn't want to live under Adam. Then God made Eve out of Adam's ribs. Trumpeter didn't have S2 mechanism originally, but only after killing Li Anqi and devouring him. In other models, Unit 4 exploded because it failed to load S2 mechanism, so Unit 3 was thrown to NERV without S2 mechanism. The previous outbreak was due to the awakening of the soul in the horn machine of Ikari Yui, the mother of Shinji, to protect Shinji. 1 I ran away because it was dangerous to see Shinji, so I blocked the steel plate with my hand. The second one ran away because I saw Shinji being beaten to death by the water angel. The third escape was because Shinji wanted to protect his time 1, and it was also because Shinji was dying at that time. When he woke up, he killed Li Anqi with a synchronization rate of 400%. All this is just a mother trying to protect her son's heart.