Atonement
atonement is a made up word by Tyndale - at one ment - reconcillation, reintegration of relationships - making them one again. However, the weekness of this is that the priest does the kipper and then the forgivenss is done directly by God and that is what completes it - the atonement isn’t done until God has forgiven. The priest is not doing the whole of the reconcilation, he’s fulfilling a pre-requisite. He is removing an impediment to the devine - human relationship.
The Hebrew word translated as "atonement" in Leviticus 4 is כִּפֶּר (kipper) //Ransom//