'Burden' in the Bible

"When Aaron and his sons have finished covering the sanctuary, and all the furniture of the sanctuary, as the camp moves forward; after that, the sons of Kohath shall come to carry it: but they shall not touch the sanctuary, lest they die. These things are the burden of the sons of Kohath in the Tent of Meeting.

but thus do to them, that they may live, and not die, when they approach to the most holy things: Aaron and his sons shall go in, and appoint them everyone to his service and to his burden;

At the commandment of Aaron and his sons shall be all the service of the sons of the Gershonites, in all their burden, and in all their service; and you shall appoint their duty to them in all their responsibilities.

This is the duty of their burden, according to all their service in the Tent of Meeting: the tabernacle's boards, its bars, its pillars, its sockets,

and the pillars of the court around it, and their sockets, and their pins, and their cords, with all their instruments, and with all their service: and by name you shall appoint the instruments of the duty of their burden.

According to the commandment of Yahweh they were numbered by Moses, everyone according to his service, and according to his burden. Thus were they numbered by him, as Yahweh commanded Moses.

Moses said to Yahweh, "Why have you treated with your servant so badly? Why haven't I found favor in your sight, that you lay the burden of all this people on me?

I will come down and talk with you there. I will take of the Spirit which is on you, and will put it on them; and they shall bear the burden of the people with you, that you not bear it yourself alone.