Jeremias 11:3

Cursed be the man... — The verse is, as it were, a mosaic, so to speak, of phrases, with slight verbal changes, from the recently discovered book of Deuteronomy — the “iron furnace” from Deuteronômio 4:20; 1 Reis 8:51, “Hear my voice and do them” from Deuteronômio 28:1, “Ye shall be my people” from Deuteronômio 29:13. The “iron furnace” was, of course, Egypt, the “furnace of affliction,” as in Isaías 48:10, in which the people had endured sufferings of which that was the only adequate symbol. The word used denoted the “furnace” of the smelter, but the actual form of bondage through which the Israelites had passed, working in the brick-kiln furnaces (Êxodo 1:14), had probably given a special force to the phrase.