John Gill expounds on the eternal council among the Father, Son, and Holy Spirit regarding the salvation of humanity, emphasizing that this divine consultation was not due to any lack of knowledge or superiority among the Persons of the Trinity. He illustrates that the council was a display of God's infinite wisdom and unity, where the roles of each divine person were agreed upon for the salvation plan, including the necessity of Christ's incarnation and atonement. Gill highlights that this council was foundational to the covenant of grace, which was established to ensure the reconciliation of the elect with God. The preacher underscores the importance of understanding this divine transaction as a means to appreciate the depth of God's love and the intricacies of salvation.