'Sin offering' in the Bible

And the flesh of the bull and its skin and its offal you will burn with fire outside the camp; it [is] a sin offering.

"And you will offer a bull for a sin offering every day for the atonement; and you will offer a sin offering on the altar when you make atonement for it, and you will anoint it to consecrate it.

And Aaron will make atonement on its horns one time in the year from the blood of the sin offering of the atonement; one time in the year he will make atonement on it throughout your generations; it is a most holy thing for Yahweh."