'Sin bearer' in the Bible

but the flesh of the bullock and its skin, and its dung, shalt thou burn up with fire, outside the camp, - a sin-bearer, it is.

But Aaron shall put a propitiatory-covering upon the horns thereof, once in the year: of the blood of the sin-bearer for propitiatory-coverings, once in the year, shall he put a propitiatory-covering thereupon to your generations, most holy, it is to Yahweh.