'Burden' in the Bible

You will surely wear out, both you and these people who are with you, for this is too heavy a burden for you; you are not able to do it by yourself.

And let them judge the people at all seasons: and it shall be, that every great matter they shall bring unto thee, but every small matter they shall judge: so shall it be easier for thyself, and they shall bear the burden with thee.

If thou see the ass of him that hateth thee lying under his burden, and wouldest forbear to help him, thou shalt surely help with him.