Exodus 25:12 - 16 - You shall cast four rings of gold for it, and put them in its four feet. Two rings shall be on the one side of it, and two rings on the other side of it. You shall make poles of acacia wood, and overlay them with gold. You shall put the poles into the rings on the sides of the ark to carry the ark. The poles shall be in the rings of the ark. They shall not be taken from it. You shall put the testimony which I shall give you into the ark.
Numbers 3:31 - Their duty shall be the ark, the table, the lamp stand, the altars, the vessels of the sanctuary with which they minister, and the screen, and all its service.
Deuteronomy 10:8 - At that time Yahweh set apart the tribe of Levi, to bear the ark of the covenant of Yahweh, to stand before Yahweh to minister to him, and to bless in his name, to this day.
1 Samuel 6:19 - He struck of the men of Beth Shemesh, because they had looked into the ark of Yahweh, he struck of the people fifty thousand seventy men; and the people mourned, because Yahweh had struck the people with a great slaughter.