“To live is Christ” is to sit at the Lord’s table and partake of all the benefits of his life and his death. His forgiveness. His suffering. His resurrection. His cleansing. His acceptance. His inheritance. In Christ we have taken it all into our being.
“To live is Christ” is life in the kingdom of God that only comes through repentance and belief. And that is good news! No more trying to figure out the Christian life. No more “just tell me what to do.” Instead, just tell me what Christ has already done. That’s all we need to know.