Isaiah 48:10

Look, I have refined you, but not as silver; I have purified you ¹  in the furnace of misery.

De 4:20; Job 23:10; Ps 66:10; Pr 17:3; Isa 1:25,26; Jer 9:7; Eze 20:38; Eze 22:18-22; Zec 13:8,9; Mal 3:2,3; Heb 12:10,11; 1Pe 1:7; 1Pe 4:12; Re 3:19

¹ tc The Hebrew text has בְּחַרְתִּיךָ (bÿkhartikha, “I have chosen you”), but the Qumran scroll 1QIsa^a reads correctly בחנתיכה (“I have tested you”). The metallurgical background of the imagery suggests that purification through testing is the idea.