Numbers 2:17-19

American Standard Version

¹⁷ Then the tent of meeting shall set forward, with the camp of the Levites in the midst of the camps: as they encamp, so shall they set forward, every man in his place, by their standards.

¹⁸ On the west side shall be the standard of the camp of Ephraim according to their hosts: and the prince of the children of Ephraim shall be Elishama the son of Ammihud. ¹⁹ And his host, and those that were numbered of them, were forty thousand and five hundred.