Those camping on the east—toward the sunrise—will be of the standard of Judah, according to their divisions. Nachshon son of Amminadab, is the prince of the sons of Judah.
and two oxen, five rams, five male goats and five male lambs one year old to be sacrificed as a fellowship offering. This was the offering of Nahshon son of Amminadab.
Those camping in front of the Tent of Meeting, on the east, toward the sunrise, were Moses, Aaron, and his sons. They were to care for the Sanctuary on behalf of Bnei-Yisrael. But anyone unauthorized who approached had to be executed.