'Burden' in the Bible

The builders on the wall, and the bearers of the burden, those lading, each with one of his hands is working in the business, and one is laying hold of the missile.

In those days I have seen in Judah those treading wine-vats on sabbath, and bringing in the sheaves, and lading on the asses, and also, wine, grapes, and figs, and every burden, yea, they are bringing in to Jerusalem on the sabbath-day, and I testify in the day of their selling provision.

And it cometh to pass, when the gates of Jerusalem have been dark before the sabbath, that I speak, and the doors are shut, and I say, that they do not open them till after the sabbath; and of my servants I have stationed at the gates; there doth not come in a burden on the sabbath-day.