Numbers 3:35
The leader of the tribe and family of Merari was Abihail's son Zuriel. The descendants of Merari encamped beside the tent toward the north.
Numbers 1:53
But the descendants of Levi are to encamp on all sides of the Tent of Meeting so that divine wrath won't fall on the congregation of Israel. The descendants of Levi are to take care of the Tent of Meeting."
Numbers 2:25
"Toward the north is to be the division of the camp of Dan under their standard. The leader of Dan is to be Ammishaddai's son Ahiezer.
Numbers 3:28-29
all the males a month old and above numbered 8,600. They were tasked to the care of the sanctuary.