Why is salvation by grace necessary?

Salvation by grace is crucial because it eliminates any basis for human boasting and affirms the sovereign nature of God's will. As Ephesians 2:8-9 articulates, salvation is a gift from God, ensuring that no one can claim merit before Him. This is essential not only to maintain God's justice—since true justice must be satisfied—and to highlight our total dependence on Him for salvation. The sermon underscores that without grace, salvation would essentially be a work-based system where human effort prevails, which contradicts the truth of the Gospel that we are inherently sinful and unable to save ourselves. Ultimately, the necessity of grace ensures that God receives all the glory for salvation.