I was explaining this verse to Cameron yesterday and it amazed me his reaction. He said "wow, Jesus asked God to forgive them even though they were killing him and saying all those mean things? He is pretty awesome for that." Jesus' Seven Last Words Luke
Jesus' last word is our first word. "Tetelestai - It is finished". When He died, our life began. And because "it is finished", there is nothing that any one of us can contribute to His work on the cross to bring us any closer to salvation.