John Gill emphasizes that those born of God possess a divine nature that empowers them to overcome the challenges of the world, including temptations and false teachings. He explains that this victory is achieved through faith, which is a gift from God and is centered on Christ as its object. Gill highlights that true faith enables believers to triumph over adversities and remain steadfast in their commitment to God's commands. The sermon encourages believers to recognize their identity in Christ and the strength that comes from their faith to conquer worldly obstacles.