John Gill expounds on Christ's role as the Surety of the Covenant, emphasizing that He voluntarily took on the obligations of humanity's sins, satisfying divine justice through His obedience and sacrifice. Christ's suretyship is not merely an accessory to human obligation but a complete transfer of debt, where He bore the sins of the elect and fulfilled the law on their behalf. Gill clarifies that Christ's engagement as Surety ensures that believers are freed from the debt of sin, as their sins are imputed to Him, and His righteousness is credited to them. This profound act of love and grace guarantees the salvation of the elect, as Christ is committed to bringing them safely to glory. Ultimately, Gill highlights the unbreakable bond of this covenant, rooted in God's faithfulness and Christ's perfect fulfillment of His promises.