'Dross' in the Bible

Thou puttest away all the wicked of the earth like dross: therefore I love thy testimonies.

Take away the dross from the silver, and there shall come forth a vessel for the finer.

Burning lips and a wicked heart are like a potsherd covered with silver dross.

Thy silver is become dross, thy wine mixed with water:

And I will turn my hand upon thee, and purely purge away thy dross, and take away all thy tin:

Son of man, the house of Israel is to me become dross: all they are brass, and tin, and iron, and lead, in the midst of the furnace; they are even the dross of silver.

Therefore thus saith the Lord GOD; Because ye are all become dross, behold, therefore I will gather you into the midst of Jerusalem.