A testimony of how the Lord was working on his heart as he was learning to “walk in the light” from Bishop Festo Kivengere (A Gentle Wind of God: The Influence of the East African Revival):
At one time William Nagenda and I were sharing an exhausting preaching itinerary overseas. Along the way I became jealous of the success of my brother. I became critical of everything he said. Each sentence was wrong or ungrammatical or unscriptural. His gestures were hypocritical. Everything about my brother was wrong, wrong, wrong. The more I criticized, the colder I became. I was icy and lonely and homesick. I was under conviction by the Holy Spirit, but I went on seeking to justify myself and put the blame on William. At last I repented and then had to face the difficult task of admitting my bad attitude to William. We were about to start off for a meeting where we were to preach together, and I said, “William, I am sorry. I’m very sorry. You sensed the coldness.” Yes, I felt the coldness, but I didn’t know what had happened. What is it?” “I became jealous of you. Please forgive me.” That dear brother got up and hugged me and we both shed tears of reconciliation. My heart was warm, and when he preached, the message spoke to me deeply.
The verse that continually renewed the love of the African Christians was 1 John 1:7: “But if we walk in the light, as he is in the light, we have fellowship with one another, and the blood of Jesus his Son cleanses us from all sin.” A heart that grows cold from God inevitably will grow cold toward others.