Q. Why do people say atonement is at-one-ment … (aka) making us one with God? Atonement is the sacrifice that paid the sin debt. But does it alone, really make us one with God? Isn’t justification the point in time in which we become one with God?
A. This popular saying means that the Lord’s atonement made our “at-one-ment” possible. We still have to ask for His death to be applied to our sins (Romans 10:13), and that’s the point when we are justified and truly become one with God.