The sermon titled "Cast Out The Bondwoman And Her Son" by Todd Nybert explores the theological dichotomy between law and grace, drawing from Genesis 21 and Galatians 4:28. Nybert underscores that the story of Ishmael and Isaac allegorically represents the two covenants: Ishmael, born of Hagar, symbolizes the covenant of law (works), while Isaac, born of Sarah, represents the covenant of grace. He emphasizes that salvation is solely by God's promise rather than human efforts, reflecting on how the mocking of Ishmael towards Isaac illustrates the broader hostility between those who pursue righteousness through works and those who embrace grace. The practical significance lies in understanding that true freedom in Christ comes from recognizing salvation as entirely a work of God's grace, urging believers to reject any legalistic entanglements that threaten their understanding of grace.
Key Quotes
“The only reason we're children is because God promised we would be... a supernatural birth, not fleshly, but supernatural.”
“If you believe that there's something you must do before God can do something for you, you need to be circumcised. If you take that route, Christ will profit you nothing.”
“It's either all grace or all works. Hear me, it's either all grace or all works. There is no in between.”
“That is the liberty that is in Christ Jesus... God takes somebody like me, nothing but sin, and can do nothing to save himself, and makes me to stand before the presence of his glory, holy, perfect, and unblameable, and unreprovable in His sight.”
The story of Hagar and Sarah illustrates the distinction between salvation by works and salvation by grace.
In Galatians 4, the apostle Paul explains that Hagar represents the old covenant of law and works, while Sarah represents the new covenant of grace. This allegory highlights the truth that those born of grace, like Isaac, are the true children of God, while those who rely on their own efforts, represented by Ishmael, are excluded from the inheritance. This duality emphasizes the core Reformed belief that salvation is solely by God's grace and not influenced by human works or conditions.
Galatians 4:24-31, Genesis 21:9-12
Salvation is by grace as it is God's unmerited favor, independent of human effort.
The assurance that salvation is by grace alone is rooted in biblical teachings that affirm human inability to achieve righteousness on their own. Passages like Ephesians 2:8-9 declare that we are saved by grace through faith, and this is not from ourselves; it is the gift of God, not by works, so that no one can boast. This underscores the Reformed doctrine of total depravity, which asserts that no one can contribute to their salvation. God's sovereign choice and action are the basis for our inheritance as His children, akin to Isaac's miraculous birth.
Ephesians 2:8-9, Romans 11:6
Understanding the difference between grace and works is crucial to grasping the true nature of the Gospel.
The distinction between grace and works is foundational in Reformed Christian theology because it determines one’s understanding of salvation. Grace signifies God's unmerited favor and initiative in salvation, while any reliance on works contradicts the Gospel and leads to legalism. Romans 11:6 explains that if salvation is by grace, it cannot be based on works; otherwise, grace would no longer be grace. This understanding affects how Christians live out their faith, cultivating a relationship with God based on love and dependence rather than obligation and fear of judgment.
Romans 11:6, Galatians 5:1
Being children of the promise signifies our identity as those chosen by God's grace for salvation.
In Galatians 4:28, Paul asserts that believers, like Isaac, are children of promise. This emphasizes God's sovereign choice and faithfulness to fulfill His covenantal promises. Unlike Ishmael, who was born according to the flesh, Isaac's birth was a fulfillment of God's promise and power. This identity as children of promise reassures believers of their secure position in Christ and highlights the assurance that their salvation is rooted in God’s commitment, not human effort. This reality frees Christians from the fear of losing salvation and calls them to live in the freedom of grace.
Galatians 4:28, Romans 8:16-17
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