This sermon emphasizes the biblical truth that believers are called to reign in life through Jesus Christ. Drawing from Romans 5:17, the speaker defines an overcomer as one who reigns in every aspect of life by receiving the abundance of grace and righteousness. The message underscores the victory over sin, darkness, and the devil that comes from understanding and embracing the finished work of Christ on the cross. It challenges misconceptions about Christian life, emphasizing the original intention of man to have dominion over the earth. Through Jesus, believers are restored to their God-given authority, empowered to live out the Gospel of the Kingdom by demonstrating kingdom dominion. The sermon concludes by urging believers to align their beliefs with the truth of Scripture, emphasizing the importance of seeking first the Kingdom of God and His righteousness.