Calvin explains that the Ninth Commandment reaches far beyond lying in court and addresses the entire way we speak about others. Because God himself is truth, believers are called not only to avoid false accusations and slander but also to protect and defend the good name of their neighbors. Calvin warns that malicious gossip, subtle insinuations, sarcastic mockery, and the eager spreading of damaging stories all violate this commandment, even when the statements themselves are technically true. The law therefore governs not only the tongue but also the ear and the heart, condemning the desire to listen to slander and the habit of forming harsh suspicions about others. True obedience to this commandment requires that Christians become careful interpreters of one another’s words and actions, striving to preserve their neighbor’s reputation through fair judgment, restrained speech, and a sincere commitment to truth.

Readings:

John Calvin — Institutes of the Christian Religion, Book 2, Chapter 8 (Sections 47–48)

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Calvin shows that the Eighth Commandment reaches far beyond simple theft and speaks to the entire fabric of justice in human relationships. Because God himself distributes the goods of this world, to seize what belongs to another—whether by violence, fraud, manipulation, or neglect of duty—is to violate God’s ordering of society. Yet the commandment does more than forbid stealing; it calls believers to actively preserve the good of their neighbors. Calvin explains that justice requires honest labor, contentment with what God has given, generosity toward those in need, and faithfulness within every calling—from rulers and pastors to parents, servants, and citizens. In this way the commandment exposes not only outward wrongdoing but also the deeper greed and selfishness of the heart, calling Christians to a life marked by integrity, responsibility, and sincere concern for the welfare of others.

Readings:

John Calvin — Institutes of the Christian Religion, Book 2, Chapter 8 (Sections 45–46)

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Calvin pushes the Sixth and Seventh Commandments far deeper than outward behavior, showing that God’s law governs not only the hand but the heart. Murder is not merely the act of shedding blood; it begins wherever anger, hatred, or the desire to harm another person takes root, because every human being bears the image of God and belongs to the same human family. Likewise, chastity is not merely the avoidance of adultery but the disciplined ordering of desire according to God’s design for marriage. Calvin argues that purity of life requires both inward restraint and outward obedience: we must defend our neighbor’s life, guard our own hearts from hatred, honor the dignity of marriage, and recognize our limitations honestly before God. Celibacy is a gift given only to some, while marriage stands as the ordinary remedy for human weakness. In both commandments the law exposes the depth of human sin and calls believers to lives marked by self-control, reverence for God’s image in others, and sincere devotion of body and soul to the Lord.

Readings:

John Calvin — Institutes of the Christian Religion, Book 2, Chapter 8 (Sections 39–44)

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How do we truly know the invisible God when nature alone leaves us prone to confusion and speculation? In this reading, Calvin explains why Scripture provides a clearer portrait of God than creation by itself ever could, grounding our knowledge of the Creator in the historical account given through Moses. He rebukes arrogant curiosity about time, eternity, and creation, urging humility where God has chosen silence, and shows how the six-day creation displays God’s fatherly wisdom and care. Calvin then turns to the invisible realm, addressing angels not to satisfy curiosity, but to guard against errors that diminish God’s sovereignty or divide creation into rival powers. Throughout, he calls us away from idle speculation and back to Scripture’s plain teaching, where true knowledge leads not to pride, but to reverence, faith, and worship.

Readings: John Calvin, The Institutes of the Christian Religion, Book 1, Chapter 14 (Sections 1–5)

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of God? In today’s reading, Calvin carefully addresses this tension by showing how Scripture speaks of the Father and the Son according to order and role without dividing the divine essence. He explains Christ’s words as Mediator, clarifies passages that seem to imply inferiority, and demonstrates that the Son’s submission belongs to His redemptive office, not to His nature. Drawing on Irenaeus, Tertullian, and the broader consensus of the Fathers, Calvin dismantles claims that early Christianity knew only the Father as God, showing instead a consistent confession of one God in three persons. The result is a sober, historically grounded defense of Trinitarian faith that guards both Christ’s full divinity and the unity of God without speculation or distortion.

Readings: John Calvin, The Institutes of the Christian Religion, Book 1, Chapter 13 (Sections 26–29)

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Calvin reminds us that the Fifth Commandment is about far more than family etiquette—it is about God’s entire order for human authority. When Scripture commands us to “honour your father and your mother” (Exod. 20:12), Calvin explains that God is teaching us to respect every legitimate authority he places over us. Parents serve as the first and most natural example because their authority is easiest for us to recognize, but the principle extends outward to rulers, leaders, and all positions of responsibility that God establishes (1 Tim. 5:17). The honour commanded here includes reverence, obedience, and gratitude, because authority itself reflects a small participation in God’s own rule. Calvin also explains the promise attached to the commandment: long life is not presented as the ultimate reward, but as a visible sign of God’s favour. Even when believers die young, God has not failed his promise, since his favor can be shown even more fully beyond this life. At the same time, the command carries a warning—rebellion against rightful authority ultimately places a person under God’s judgment. Yet Calvin carefully adds an important limit: obedience to parents, rulers, and all authorities is required only “in the Lord.” Because their authority comes from God, it must never lead us away from obedience to him. In the end, the Fifth Commandment teaches that honouring earthly authority is part of learning to honour the heavenly Father himself.

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The Fourth Commandment is not about protecting a calendar but about teaching the soul to rest in God. In Book 2, Chapter 8, Sections 28–34 of Institutes of the Christian Religion, Calvin explains that the Sabbath first signified spiritual rest—ceasing from our own works so that God may work in us by His Spirit (Hebrews 3:13; 4:3, 9). The seventh day pointed forward to the perfection of that rest, fulfilled in Christ, the substance of the shadow (Colossians 2:16–17; Romans 6:4). Yet while the ceremonial aspect has been abolished, two enduring purposes remain: the orderly gathering of the Church for Word, sacraments, and prayer (1 Corinthians 14:40; 16:2), and humane rest for those under our authority (Deuteronomy 5:14; Exodus 23:12). Calvin sharply rejects both Judaizing superstition and careless neglect. Christians are not bound to the number seven, but they are bound to pursue lifelong mortification, disciplined worship, and charity toward others. The Lord’s Day stands not as a revived shadow, but as a wise and necessary appointment for preserving peace, order, and the flourishing of true religion.

Readings: John Calvin — Institutes of the Christian Religion, Book 2, Chapter 8, Sections 28–34

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When God forbids images, he is not merely prohibiting carved statues—he is protecting his own glory and our understanding of who he truly is. In this reading from John Calvin’s Institutes of the Christian Religion, Book 2, Chapter 8, Sections 17–21, Calvin explains the Second Commandment (Exodus 20:4–6) as a safeguard against corrupt worship and distorted conceptions of God. Because God is incomprehensible and spiritual in nature, any attempt to represent him in visible form inevitably diminishes him. The commandment therefore restrains our impulse to fashion God according to our senses and imaginations, and instead directs us to the worship he himself appoints—spiritual, obedient, covenantal worship. Calvin then turns to the declaration that God is “a jealous God,” showing that divine jealousy is covenant language: God relates to his people as a faithful husband who will not tolerate rivals. Idolatry is spiritual adultery, a violation of pledged faith. When God speaks of visiting the iniquity of the fathers upon the children, Calvin carefully defends divine justice, explaining that descendants are not condemned for another’s guilt but, when abandoned to the same corruption, walk willingly in the same path. At the same time, God’s mercy is extended to thousands, far surpassing the reach of his temporal judgments. The central lesson is clear: God’s holiness, justice, and mercy stand together. He will not share his glory, he will not act unjustly, and he will not forget covenant faithfulness.

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