John Gill emphasizes the attributes of God, particularly His immutability, which signifies that God does not change in His nature, perfections, or purposes. He contrasts God's unchangeable nature with the mutability of creation, illustrating that while everything else is subject to change, God remains constant and faithful. Gill explains that God's immutability is essential to His essence as a spiritual being and is reflected in His love, grace, and covenant with His people. He reassures believers that God's promises and decrees are unalterable, providing a foundation of hope and security in their faith. Ultimately, Gill's sermon encourages the congregation to trust in the steadfastness of God amidst life's uncertainties.

A.W. Tozer emphasizes that God's grace is eternal and unchanging, countering the common belief that the Old Testament is solely about law while the New Testament is about grace. He asserts that God has always been the God of grace, and His immutability means that His grace has always been present throughout history. Tozer argues that the fullness of God's grace has not increased or decreased over time, and it was part of His redemptive plan long before Christ's sacrifice on the cross. The sermon highlights that grace is a constant attribute of God, not a new concept introduced in the New Testament.