Numbers 3:31 lists the sacred objects entrusted to the Kohathites—the very items they must carry on their shoulders, justifying their exemption from carts.

Numbers 4:4-15 details the Kohathites' duty to carry the sanctuary's holy items on their shoulders, directly explaining why they received no carts in 7:9.

Numbers 4:15 reiterates that Kohathites must carry the holy things on their shoulders, providing the direct rationale for the exception in 7:9.

Numbers 4:31 specifies the holy items Kohathites carry on their shoulders, detailing the service mentioned here.

Numbers 10:21 shows Kohathites carrying holy things in the march, fulfilling the duty stated here.

In 2 Samuel 6:6, Uzzah dies when the ark is mishandled on a cart—contrasting with the shoulder-carrying commanded for Kohathites in 7:9.

2 Samuel 6:13 shows the ark being carried properly (by Levites on shoulders), fulfilling the shoulder-carrying principle from Numbers 7:9.

1 Chronicles 15:13 directly references the 'rule' for carrying the ark—the same shoulder-carrying requirement that exempted Kohathites from carts in Numbers 7:9.

2 Samuel 6:3 contrasts by transporting the ark on a cart instead of by Kohathites, violating this command.

1 Chronicles 15:2 records David's decree that only Levites carry the ark, reaffirming the rule here.

1 Chronicles 15:15 states Levites carried the ark on their shoulders as Moses commanded, directly fulfilling this verse.

2 Samuel 15:24 shows Levites carrying the ark on shoulders, a positive example of the principle here.

1 Chronicles 23:26 states the Levites no longer carry the tabernacle, contrasting with the active shoulder-carrying duty prescribed in Numbers 7:9.