'Weight' in the Bible

How is it possible for me by myself to be responsible for you, and undertake the weight of all your troubles and your arguments?

In judging, do not let a man's position have any weight with you; give hearing equally to small and great; have no fear of any man, for it is God who is judge: and any cause in which you are not able to give a decision, you are to put before me and I will give it a hearing.

But thou shalt have a perfect and just weight, a perfect and just measure shalt thou have: that thy days may be lengthened in the land which the LORD thy God giveth thee.

And our cry went up to the Lord, the God of our fathers, and the Lord's ear was open to the voice of our cry, and his eyes took note of our grief and the crushing weight of our work: