Numbers 2:1-3  Amplified Bible, Classic Edition

2 The Lord said to Moses and Aaron,

² The Israelites shall encamp, each by his own [tribal] standard or banner with the ensign of his father’s house, opposite the Tent of Meeting and facing it on every side.

³ On the east side toward the sunrise shall they of the standard of the camp of Judah encamp by their companies; Nahshon son of Amminadab being the leader of the sons of Judah.