Similar Material km 4/80 pp. 1-4 Speak from Your Heart’s Abundance Speaking from Good Hearts for Salvation The Watchtower Announcing Jehovah’s Kingdom—1961 Serving Jehovah with a Complete Heart The Watchtower Announcing Jehovah’s Kingdom—1971 Above All Else, Guard Your Heart! The Watchtower Announcing Jehovah’s Kingdom—1952 The Treasure of a Christian Heart The Watchtower Announcing Jehovah’s Kingdom—1960 Heart Aid to Bible Understanding Apply Your Hearts The Watchtower Announcing Jehovah’s Kingdom—1961 Check Your Heart The Watchtower Announcing Jehovah’s Kingdom—1965 Reaching the Heart of Your Listeners Theocratic Ministry School Guidebook When Building Disciples, Motivate the Heart The Watchtower Announcing Jehovah’s Kingdom—1970 The Human Heart Is Treacherous The Watchtower Announcing Jehovah’s Kingdom—1971