We demonstrate our love for God by keeping His commandments. Obedience is that which God desires. I would not find it difficult to say that God does not even desire sacrifice, because sacrifice is simply a by-product of our obedience. He does not require our sacrifice because He is already satisfied in the sacrifice of His Son. If we observe, keep, hold onto, and put into practice God's commandments, we will become like Jesus because it is exactly what Jesus did while He walked the earth. Jesus followed God's will, submitting Himself, even to death, being obedient in all things to His Father.