Spiritual Warfare teaches that every Christian is engaged in a real battle against Satan, demons, and spiritual forces of darkness, but victory is found through Jesus Christ. It emphasizes that our struggle is not against flesh and blood, but against principalities and powers, and calls believers to stay alert, guard their hearts and minds, and put on the full armor of God—truth, righteousness, faith, salvation, the Word, and prayer. The chapter explains how Satan deceives as the accuser, tempter, and destroyer, and warns against idols, occult practices, false teachers, and sinful influences. It highlights the power of God’s Word, worship, prayer, repentance, and the authority of Jesus’ name in overcoming temptation and casting down lies. With the Spirit’s guidance, discernment, and the protection of God’s angels, Christians are equipped to expose darkness, walk in holiness, and stand firm in faith. Ultimately, spiritual warfare is fought not in human strength but through the blood of the Lamb, the word of our testimony, and the power of God’s Spirit, ensuring victory for all who remain steadfast in Christ.