John Gill emphasizes the profound liberty that comes with being a son of God, highlighting that this freedom is a result of Christ's redemptive work. He explains that true liberty is not a license to sin but a release from sin, Satan, and the law, allowing believers to live righteously. Gill distinguishes between the liberty of grace, experienced in this life, and the future liberty of glory, which will be fully realized in eternity. He underscores that this freedom enables believers to worship God authentically and access Him without fear, as they are no longer bound by the law or traditions of men. Ultimately, this liberty is a gift from Christ, who has made His people free indeed.

T. Austin-Sparks explores the continuity of God's plan from the beginning of history through to Christ, emphasizing the transition from individual figures like Abraham to the collective identity of Israel. He highlights how God's intervention in human history, particularly through the appearances to Abraham and the establishment of the new Israel in Christ, signifies a divine calling for all believers. Sparks illustrates that the glory of God is revealed through grace and the supernatural power of Jesus, culminating in the sonship of believers. He encourages listeners to recognize their identity as children of God, born not of human effort but through divine intervention. The sermon underscores the importance of understanding our spiritual heritage and the glory that comes with being part of God's family.