Building on the Rock: Why Trusting Christ’s Finished Work Matters

The post takes up Jesus’s call at the end of the Sermon on the Mount to act on his words, and asks what that action actually is. The author begins with the Parable of the Wise and Foolish Builders and warns against reading it as a demand to earn salvation by keeping everything Jesus taught. In the author’s view, that approach is law rather than good news, and it leads to failure and a guilty conscience. Trying to become a mature believer through rule-keeping fares no better.

Instead, the author argues that the “words” Jesus has in mind are about “the will of my Father,” which the post identifies as believing in the Son whom God sent. Drawing on several passages from John and First John, the author says that the work God asks for is faith, and that everything needed for our salvation and sanctification has already been accomplished through Christ. The post presents this as genuinely good news: believers do not need to strive anxiously, hoping their efforts are good enough.

The author describes the foolish builder as someone who hears God’s will and good news of grace but does not believe it, trusting instead in personal works and self-righteousness. The wise builder rests on Jesus, the Righteous Rock, and receives blessings freely in him. The post also recounts a Facebook post that stated that the work of God is simply believing in Jesus. Many angry responses insisted that repentance, confession, tithing, and other duties were also required. The author concludes that a foolish person either does not believe or thinks belief is not enough, and lacks peace and confidence as a result.

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