T. Austin-Sparks emphasizes the profound significance of 'the faith' as it relates to sonship in his sermon 'The Liberty of Sons.' He explains that true sonship, which is rooted in a relationship with Jesus Christ, is the essence of the faith that believers must fight to maintain against legalistic systems that hinder spiritual growth. Sparks highlights the conflict between the freedom found in Christ and the bondage of religious traditions, urging believers to pursue a deeper relationship with the Lord rather than adhering to man-made rules. He warns that the fight of the faith is not merely against external challenges but also within the hearts of believers who may be influenced by established systems. Ultimately, he calls for a return to the liberty of sons, which is found in a genuine pursuit of Christ.

T. Austin-Sparks emphasizes the transformative power of a personal revelation of Jesus Christ, as experienced by Paul, who moved from Judaism to a life of liberty in Christ. This revelation not only liberated Paul from the constraints of religious law but also deepened his understanding of Jesus as the fulfillment of all spiritual values. Sparks warns against using grace as a cover for sinful desires, urging believers to embrace the true liberty found in Christ, which leads to spiritual growth and maturity. He highlights the necessity of continuous unveiling of Christ in the heart for true emancipation and warns against falling prey to distractions that sidetrack believers from God's purpose. Ultimately, the message is that Christ must become everything in our lives, guiding our actions and decisions through His Spirit.

George Mueller emphasizes that 'The joy of the Lord is your strength,' drawing from Nehemiah 8:10. He explains that true joy comes from understanding our spiritual liberty through Christ, which surpasses any earthly freedom. Mueller encourages believers to actively engage with God, surrendering their burdens and recognizing their identity as beloved children of God. He stresses the importance of continual growth in faith, prayer, and the study of Scripture to maintain and deepen this joy. Ultimately, he calls for a life of gratitude and love towards God, which leads to holiness and happiness.