The word expiation begins with the prefix ex, which means "out of" or "from." Expiation means to remove something. In biblical theology it has to do with taking away or removing guilt by means of paying a ransom or offering an atonement. It means to pay the penalty for something. Thus, the act of expiation removes the problem by paying for it in some way, in order to satisfy some demand. Christ's expiation of our sin means that He paid the penalty for…