以賽亞書 1:25 註釋：Rashi & Ibn Ezra

And I will return My hand upon you One blow after another, until the transgressors have been completely destroyed.

ידי My hand; that is, my smiting (comp. Exod. 9:3).

as with lye This is an expression meaning soap [sbon in O.F., savon (in modern French)]. Its deviation is an expression of cleanliness, similar to (Ps. 24:4): “and pure (בַּר) of heart,” since it cleanses the garment of its stains.

your dross mentioned above, as: “Your silver has become dross”; a mixture of silver with copper is called dross. Here too, a mixture of the wicked with the righteous. I will destroy the transgressors, who are all dross.

all your tin The tin mixed with silver, that is to say, the wicked among you. בְדִיל is called estejjn [etain] in O.F. [tin].