D.L. Moody shares a personal story about his son, Willie, who struggled to forgive his sister after a conflict. Moody emphasizes that simply saying prayers is not enough if one harbors anger and unforgiveness in their heart. He illustrates that true peace comes only when we confront our sins and seek forgiveness, highlighting that the gospel of Jesus Christ is fundamentally a message of peace. Ultimately, Willie finds happiness and peace only after reconciling with his sister, demonstrating the importance of forgiveness in achieving inner peace.

My little boy had some trouble with his sister one Saturday, and he did not want to forgive her. And at night he was going to say his prayers, and I wanted to see how he would say his prayers, and he knelt down by his mother and said his prayers, and then I went up to him, and I said, "Willie, did you pray?" "I said my prayers." "Yes, but did you pray?" "I said my prayers." "I know you said them, but did you pray?" He hung his head. "You are angry with your sister?" "Well, she had no business to do thus and so." "That has nothing to do with it; you have the wrong idea, my boy, if you think that you have prayed to-night." You see he was trying to get over it by saying, "I said my prayers to-night." I find that people say their prayers every night, just to ease their conscience. And then I said, "Willie, if you don't forgive your sister, you will not sleep to-night. Ask her to forgive you." He didn't want to do that. He loves the country, and he has been talking a great deal about the time when he can go into the country and play outdoors. So he said, "O, yes, I will sleep well enough; I am going to think about being out there in the country." That is the way that we are trying to do; we are trying to think of something else to get rid of the thought of these sins, but we cannot. I said nothing more to him. I went on studying, and his mother came down stairs. But soon he called his mother, and said, "Mother, won't you please go up and ask Emma if she won't forgive me?" Then I afterwards heard him murmuring in bed, and he was saying his prayers. And he said to me, "Papa, you were right, I could not sleep, and I cannot tell you how happy I am now." Don't you think there is any peace until your sins are put away. My dear friends, the gospel of the Lord Jesus Christ is the gospel of peace.