No, not the jeans maker. This is the guy who's the grandfather of every single high priest in Israel. Well, at least according to our author.
Levi's actually the great-grandfather to Aaron, Moses, and Miriam. You'll probably remember them from the time they helped the Jewish people escape from slavery way back in Exodus.
Because he was so super cool and holy (and because Moses had other stuff to do), Aaron and his sons were in charge of God's house—the tabernacle—while the Israelites were wandering in the desert.
Even after the Israelites settled in the Promised Land and Solomon built the First Temple in Jerusalem, the descendants of Levi were still there handling all kinds of holy functions for the people.
The author also name-drops all the musicians who served in the Temple and goes into very specific detail about where exactly the descendants of Levi lived. You can consult this chapter if you ever go back in time and need to settle a Levite turf war.