Based on the available Ellen White Estate book sources, the earth was created before Lucifer sinned. Here is the evidence from the sources: - Ellen White repeatedly states that Lucifer was created perfect and holy, and that sin originated with him in heaven after a long period of harmony and love among the angels (see 4SP 316.3; PP 35.1; GC 493.3). There is no indication that sin existed before the creation of the earth. - The law of God existed before man was created, and the angels were governed by it. Satan (Lucifer) fell because he transgressed the principles of God's government, but this is described as happening after the creation of the angels and before the fall of man (3SG 295.1; 1SP 261.1). - When the earth was created, it was "holy and beautiful" and "very good" (7T 87.1). Satan's rebellion and fall are described as events that occurred after the creation of the earth, as he later sought to tempt and ruin humanity (PP 69.2). In summary, Ellen White's writings indicate that the earth was created before Lucifer sinned. Lucifer's rebellion began in heaven after the creation of the earth, and he later sought to extend his rebellion to humanity by tempting Adam and Eve. If you need more specific references or further clarification, please let me know! References: - Ellen G. White, The Spirit of Prophecy, vol. 4, p. 316.3 - Ellen G. White, Patriarchs and Prophets, p. 35.1, p. 69.2 - Ellen G. White, The Great Controversy, p. 493.3 - Ellen G. White, Spiritual Gifts, vol. 3, p. 295.1 - Ellen G. White, Spiritual Gifts, vol. 1, p. 261.1 - Ellen G. White, Testimonies for the Church, vol. 7, p. 87.1

According to available White Estate materials, Ellen White's published books consistently indicate that the earth and humanity were created before Lucifer sinned and was cast out of heaven. Her writings state that the law of God and the angels existed before humanity, and that Lucifer's rebellion began in heaven after the creation of the earth. Key references include: - 3SG 295.1; 1SP 261.1: The law of God existed before man was created, and the angels were governed by it. Satan fell because he transgressed the principles of God's government. - PP 35.1; GC 493.3: There was perfect harmony in the universe before sin originated with Lucifer, who was the highest in power and glory among the angels. - 7T 87.1: The earth was created holy and beautiful, and God pronounced it very good before Satan's rebellion affected it. - PP 69.2: Satan's rebellion and expulsion from heaven occurred before he tempted Adam and Eve, after the earth was created. - 4SP 316.3: There was a long period of peace before Lucifer's fall. All of these references support the view that the earth was created in a state of perfection before Satan's rebellion, and that Lucifer's fall occurred after the creation of the earth. Academic references for the sources cited: - Ellen G. White, Spiritual Gifts, vol. 3, p. 295.1 - Ellen G. White, Spiritual Gifts, vol. 1, p. 261.1 - Ellen G. White, Patriarchs and Prophets, p. 35.1, p. 69.2 - Ellen G. White, The Great Controversy, p. 493.3 - Ellen G. White, Testimonies for the Church, vol. 7, p. 87.1 - Ellen G. White, The Spirit of Prophecy, vol. 4, p. 316.3 If you need even more specific references or further clarification, please let me know!