When teaching about the Exodus, the story begins "with the Jewish people’s disgrace and concludes with their glory. And [the seder leader] expounds from the passage: 'My father was a wandering Aramean' (Deuteronomy 26:5), the declaration one recites when presenting first fruits at the Temple, until he concludes explaining the entire section." (Pesachim 116a)

Note: The first fruits (the seven species of fruit and grain) were brought to the Temple in Jerusalem and donated to sustain the priests and their families. The priests, all of the tribe of Levi, had no land of their own.The priests left aside their paid work (if any) for the time that they served in the Temple.


haggadah Section: Maggid - Beginning
Source: https://www.sefaria.org/Pesachim.116a.2?lang=bi