23 The families of the Gershonites were to pitch behind the tabernacle westward;
Numbers 3:23 Cross References - JPS_ASV_Byz
Numbers 1:53
53 But the Levites shall pitch round about the tabernacle of the testimony, that there be no wrath upon the congregation of the children of Israel; and the Levites shall keep the charge of the tabernacle of the testimony.'
Numbers 2:17
17 Then the tent of meeting, with the camp of the Levites, shall set forward in the midst of the camps; as they encamp, so shall they set forward, every man in his place, by their standards.