If you want to stay out of jail, look to the law. If you want into heaven, look to the promise. If you want to earn a paycheck from your boss, work. If you want to receive salvation from your God, believe.
Even though we are tempted to add our personal opinions to the meaning of Jesus' life and death, to increase the meaning of His sacrifice, there's only one thing that makes Christians "Christian." Christ crucified for us for the forgiveness of sin.