Exodus 28:12

28:12 You are to put the two stones on the shoulders of the ephod, stones of memorial for the sons of Israel, and Aaron will bear their names before the Lord on his two shoulders for a memorial. ¹ 

Exodus 32:26

32:26 So Moses stood at the entrance of the camp and said, “Whoever is for the Lord, come ²  to me.” ³  All the Levites gathered around him,

¹ sn This was to be a perpetual reminder that the priest ministers on behalf of the twelve tribes of Israel. Their names would always be borne by the priests.

² tn “come” is not in the text, but has been supplied.

³ tn S. R. Driver suggests that the command was tersely put: “Who is for Yahweh? To me!” (Exodus, 354).