George Fox encourages believers to be courageous in their faith and to uphold the truth of Jesus, emphasizing that they should not fear human wrath but rather honor the Lord. He reminds them that through the blood of the Lamb, they have victory over the world and should remain united in spirit, producing good fruit in their lives. Fox highlights the importance of living in the newness of life, serving the Lord, and maintaining peace among one another, assuring them of the eternal rewards for those who overcome.