Numbers 2:2-3

2“When the Israelites set up camp, each tribe will be assigned its own area. The tribal divisions will camp beneath their family banners on all four sides of the Tabernacle, but at some distance from it.

3“The divisions of Judah, Issachar, and Zebulun are to camp toward the sunrise on the east side of the Tabernacle, beneath their family banners. These are the names of the tribes, their leaders, and the numbers of their registered troops: Judah Nahshon son of Amminadab 74,600