Numbers 7:9

But to the sons of Kohath he gave none, because they were charged with the service of the holy things that had to be carried on the shoulder.

Numbers 3:31

And their guard duty involved the ark, the table, the lampstand, the altars, the vessels of the sanctuary with which the priests minister, and the screen; all the service connected with these.

2 Samuel 6:13

And when those who bore the ark of the LORD had gone six steps, he sacrificed an ox and a fattened animal.

Numbers 4:4-16

This is the service of the sons of Kohath in the tent of meeting: the most holy things.

2 Samuel 6:6

And when they came to the threshing floor of Nacon, Uzzah put out his hand to the ark of God and took hold of it, for the oxen stumbled.

1 Chronicles 15:3

And David assembled all Israel at Jerusalem to bring up the ark of the LORDto its place, which he had prepared for it.

1 Chronicles 15:13

Because you did not carry it the first time, the LORD our God broke out against us, because we did not seek him according to the rule."

1 Chronicles 23:26

And so the Levites no longer need to carry the tabernacle or any of the things for its service."

Treasury of Scripture Knowledge

Summary

But unto the sons of Kohath he gave none: because the service of the sanctuary belonging unto them was that they should bear upon their shoulders.

Bible References

Because

Numbers 3:31
And their guard duty involved the ark, the table, the lampstand, the altars, the vessels of the sanctuary with which the priests minister, and the screen; all the service connected with these.
Numbers 4:4
This is the service of the sons of Kohath in the tent of meeting: the most holy things.
2 Samuel 6:6
And when they came to the threshing floor of Nacon, Uzzah put out his hand to the ark of God and took hold of it, for the oxen stumbled.
1 Chronicles 15:3
And David assembled all Israel at Jerusalem to bring up the ark of the LORDto its place, which he had prepared for it.
1 Chronicles 23:26
And so the Levites no longer need to carry the tabernacle or any of the things for its service."

The Holy Bible, English Standard Version® copyright © 2001 by Crossway Bibles, a publishing ministry of Good News Publishers.