'Burdened' in the Bible

"Come to me, all you who labor and are heavily burdened, and I will give you rest.

For indeed we who are in this tent do groan, being burdened; not that we desire to be unclothed, but that we desire to be clothed, that what is mortal may be swallowed up by life.

If any man or woman who believes has widows, let them relieve them, and don't let the assembly be burdened; that it might relieve those who are widows indeed.