Today's Communion antiphon, John 14.27: Peace I leave with you; my peace I give to you. Not as the world gives do I give it to you, says the Lord. As sinners, we'll never have peace on our own, for we continue to sin. God has made us so that if we desire to have him take away our sins, he'll do so and we receive peace from him. This is almost common sense and I can testify to you that it is true.