Isaia 48:10

Behold, I have refined thee, but not with silver; I have chosen thee in the furnace of affliction. I have chosen thee "I have tried thee" - For בחרתיך becharticha, "I have chosen thee," a MS. has בחנתיך bechanticha, "I have tried thee." And so perhaps read the Syriac and Chaldee interpreters; they retain the same word בחרתך bechartach; but in those languages it signifies, I have tried thee. ככסף kecheseph, quasi argentum, "as silver." Vulgate.

I cannot think בכסף becheseph, With silver, is the true reading. ככסף kecheseph, Like silver, as the Vulgate evidently read it, I suppose to have been the original reading, though no MS. yet found supports this word; the similarity of the two letters, ב beth and כ caph, might have easily led to the mistake in the first instance; and it has been but too faithfully copied ever since. כור cur, which we translate furnace, should be rendered crucible, the vessel in which the silver is melted.

The meaning of the verse seems to be this: I have purified you, but not as silver is purified; for when it is purified, no dross of any kind is left behind. Had I done this with you, I should have consumed you altogether; but I have put you in the crucible of affliction, in captivity, that you may acknowledge your sins, and turn unto me.