Justifiable Propitiation

Yesterday was our Mom's Day Off event and I was helping out at it; it was at my house so I didn't really have a choice. One of the guys in the Gospel Community who put on the event asked me a question about a recent message I gave. In the message I had a long discussion about propitiation, expiation, and grace. He asked me about justification and propitiation and if they were the same thing.
I explained the difference to him and told Michael Reed, the guy that keeps our website site up to date and running smoothly, about the conversation. Michael says to me, "you should put that on the website because that makes way more sense that your 20 minute explanation during your message." Then he laughed at me.
So, here is what I said (basically).
Justification works like this. If someone broke into my house and threatened my family and I shot them, I would be justified in my action. Even though I would be justified, that guy’s family would probably not like me very much. In justification, before God, He has taken our lives and justified us by his blood (every action that is not justifiable, He has paid for). But more than that, propitiation means He actually likes us again.  
Romans 3:22-26 For there is no distinction: for all have sinned and fall short of the glory of God, and are justified by his grace as a gift, through the redemption that is in Christ Jesus, whom God put forward as a propitiation by his blood, to be received by faith. This was to show God's righteousness, because in his divine forbearance he had passed over former sins. It was to show his righteousness at the present time, so that he might be just and the justifier of the one who has faith in Jesus.
Propitiation includes all of expiation and justification. It is summed up all together by our word: Grace
1 John 4:10 In this is love, not that we have loved God but that he loved us and sent his Son to be the propitiation for our sins.
We have a truly amazing God.