How do we know grace alone is the way to salvation?
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The distinction between Isaac and Ishmael shows that salvation is by grace alone, as Isaac was born through God's promise, not human effort.
The account of Isaac and Ishmael serves as a profound illustration of grace alone in salvation. Isaac, the son of promise, was born not by human effort but by God's miraculous intervention, highlighting the theme of grace throughout Scripture. In contrast, Ishmael represents the outcome of attempting to fulfill God's promises through human means. The Apostle Paul explicitly draws this parallel in Galatians, where he emphasizes that true acceptance with God cannot come from following the law but is only through faith in the promise of God. This reinforces the Reformed understanding that salvation is solely dependent on God's grace.
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