Similar Material w01 12/1 pp. 9-13 You Can Avoid a Spiritual Heart Attack Acquire a Heart Agreeable to Jehovah The Watchtower Announcing Jehovah’s Kingdom—2001 Maintain a Complete Heart Toward Jehovah The Watchtower Announcing Jehovah’s Kingdom (Simplified)—2012 Safeguard Your Heart The Watchtower Announcing Jehovah’s Kingdom—2001 The Human Heart Is Treacherous The Watchtower Announcing Jehovah’s Kingdom—1971 Determined to Serve Jehovah With a Complete Heart The Watchtower Announcing Jehovah’s Kingdom—1986 Heart Aid to Bible Understanding Check Your Heart The Watchtower Announcing Jehovah’s Kingdom—1965 How Is Your Heart? The Watchtower Announcing Jehovah’s Kingdom—1971 Serving Jehovah with a Complete Heart The Watchtower Announcing Jehovah’s Kingdom—1971 Do You Have “a Heart to Know” Jehovah? The Watchtower Announcing Jehovah’s Kingdom—2013