When the heart's wrong, there can't be peace. Selfishness is a gangrene, eating at the very vitals. Sin is a cancer, poisoning the blood. Peace is the rhythm of our wills with Jesus' love-will. Disobedience breaks the music. Failure to keep in touch makes discord. The notes jar and grate. We have broken off. The peace can't get in. Jesus made peace by his blood. We get it only by keeping in full touch with him.