George Fox emphasizes the importance of adhering to the single, true language inspired by the Spirit of God, warning against the confusion and hypocrisy that arises from adopting the world's flattering and improper language. He urges believers to remain steadfast in their convictions and to avoid the double tongue that quenches the Spirit and leads to dissembling. Fox highlights that true followers of Christ should not conform to worldly customs but instead uphold the integrity of their speech and actions, reflecting the teachings of Jesus and the prophets. He calls for a rejection of selfish, man-pleasing attitudes and encourages a commitment to the light of Christ to prevent hypocrisy among believers.