Numbers 2:17-18

17“Then the Tabernacle, carried by the Levites, will set out from the middle of the camp. All the tribes are to travel in the same order that they camp, each in position under the appropriate family banner.

18“The divisions of Ephraim, Manasseh, and Benjamin are to camp on the west side of the Tabernacle, beneath their family banners. These are the names of the tribes, their leaders, and the numbers of their registered troops: Ephraim Elishama son of Ammihud 40,500