'Rubbish' in the Bible

And he spake before his brethren and the army of Samaria, and said, What are these feeble Jews doing? will they fortify themselves? will they sacrifice? will they make an end in a day? will they revive the stones out of the heaps of rubbish, seeing they are burned?

And Judah said, The strength of the bearers of burdens is decayed, and there is much rubbish; so that we are not able to build the wall.