← Course overview
Part III · Life in Christ

12. Love of God

The first three commandments

CCC 2052–219516 min read

When a young man asks what good deed leads to eternal life, Jesus answers: keep the commandments — and then, looking at him with love: follow me. The Catechism reads the whole Decalogue inside that exchange. The Ten Commandments are the words of the covenant, spoken by a God who introduces himself as liberator before he gives a single command; and Jesus gathers them all into two: love God with everything, love your neighbor as yourself.

This lesson covers the first table — the three commandments that order love of God: no other gods, no wrongful use of the Name, keep the Lord’s Day holy.

Before the lesson, read

  • Deuteronomy 5The Decalogue retold — prefaced by rescue: "I am the LORD your God, who brought you out… out of the house of bondage."
  • Matthew 22The greatest commandment: all the law and the prophets hang on love of God and neighbor.
  • Isaiah 44The prophet’s satire on idols — half the log warms dinner, the other half becomes a god.
  • Mark 2"The Sabbath was made for man, not man for the Sabbath" — the Lord of the day interprets it.

Ten words from a liberator

The Catechism will not let the commandments be read apart from their first sentence: I am the LORD your God, who brought you out of the land of Egypt. Grammar matters — the commands come after the rescue. The Decalogue (literally "ten words") states what covenant life with a liberating God looks like; it is Israel’s freedom charter, not the terms of enslavement. Obedience here is a response to a deliverance already accomplished — the same order grace always keeps (CCC 2052–2074).

Three framing teachings govern everything that follows. The commandments bind gravely — they articulate the natural law, so no one is exempt and no era repeals them. They are an organic unity — to break one is to fracture the whole relationship the two tables together protect. And they are possible — not by willpower, but because, as the Catechism has already argued, the God who commands gives what he commands. Augustine’s famous prayer sits under this section: give what you command, and command what you will.

The first commandment: no other gods

The first commandment claims the whole heart: worship God, adore him, put nothing in his place. Positively, it grounds the three theological virtues — faith that guards belief against voluntary doubt and despairing distortion; hope that refuses both despair and presumption; charity that answers love with love. And it grounds the virtue of religion: adoration, prayer, sacrifice, and the keeping of promises and vows made to God (CCC 2084–2103).

Its violations map the human heart’s ancient exits: superstition and magic (attempting to bend divine power to our management); idolatry — which the Catechism refuses to leave in the Bronze Age, naming power, pleasure, race, ancestors, the state, and money as the idols’ modern portfolio; divination and occultism (seizing at hidden knowledge to control the future); irreligion, sacrilege, and simony; and atheism and agnosticism, which it treats with unusual nuance — a sin against religion, yes, but often provoked, it concedes, by believers whose lives conceal rather than reveal the true face of God.

One clarification has echoed since the eighth century: the veneration of images. Because the Word became visible flesh, the Church holds that icons and images may be honored — respectful veneration that passes to the person represented — while adoration belongs to God alone. A Catholic praying before a statue is (rightly understood) doing what anyone kissing a photograph of their mother is doing: honoring a person through an image, not worshiping wood (CCC 2129–2132).

The second commandment: the weight of the Name

God introduced himself by name — the burning-bush disclosure the Old Testament treats as almost too holy to pronounce — and the second commandment guards that intimacy. The Name is not a label but a self-gift; to receive someone’s name is to be trusted with them. So the commandment governs speech: promises made in God’s name must be kept; blasphemy — words of hatred or defiance hurled at God, or the abuse of his name to cloak crime — is grave; perjury and false oaths enlist the God of truth as witness to a lie (CCC 2142–2155).

The Catechism ends the commandment tenderly rather than sternly: each Christian receives a name in Baptism, God knows each person by name, and everyday life should begin — it commends the old practice — with the sign of the cross, placing the day inside the Name: of the Father, and of the Son, and of the Holy Spirit. Reverent speech about God turns out to be training in reverent speech about everything God has named, which includes every person you will mention today (CCC 2156–2167).

The third commandment: the Lord’s Day

The Sabbath, in Scripture’s own telling, is built into creation — God rests the seventh day — and into redemption: Deuteronomy grounds it in the Exodus, a weekly protest that human beings are not slaves. Jesus, "Lord of the Sabbath," did not abolish it but gave its authoritative interpretation: the day is made for man — for mercy, healing, and honoring God rather than for scruple (CCC 2168–2173).

For Christians, the day moved: Sunday, the day of Christ’s resurrection, is the first day of the new creation and the fulfillment of the Sabbath’s meaning. The Church’s precept follows: the faithful gather for the Eucharist on Sundays and holy days — the Catechism calls the Sunday Eucharist the foundation and confirmation of all Christian practice, and deliberately missing it a grave matter. The obligation is the family meal again: love formalized so that it survives mood.

And Sunday is for rest — real rest. The Catechism defends leisure with surprising force: time for worship, family, culture, works of mercy, and the relaxation of mind and body; a refusal to let work or the market swallow the week; and a duty of employers and states to protect such rest for everyone — including a thought for those whose poverty allows them none. In an economy that never closes, keeping Sunday is close to a countercultural act of faith: a weekly embodied confession that the world is upheld by God, not by our productivity (CCC 2184–2195).

From the Catechism

God makes himself known by recalling his all-powerful, loving, and liberating action in the history of the one he addresses: "I brought you out of the land of Egypt, out of the house of bondage."

CCC 2084

Idolatry not only refers to false pagan worship… Man commits idolatry whenever he honors and reveres a creature in place of God, whether this be gods or demons… power, pleasure, race, ancestors, the state, money, etc.

CCC 2113

The Sunday Eucharist is the foundation and confirmation of all Christian practice.

CCC 2181

Key terms

Decalogue
"Ten words": the commandments of the covenant, spoken after deliverance — the charter of a freed people’s life with God.
Virtue of religion
The part of justice owed to God himself: adoration, prayer, sacrifice, and fidelity to promises and vows made to him.
Idolatry
Honoring any creature in God’s place — ancient statues or modern portfolios: power, pleasure, race, nation, money.
Blasphemy
Speech of hatred, reproach, or defiance against God, or the abuse of his name — gravity measured by the intimacy the Name represents.
The Lord’s Day
Sunday, the day of Resurrection — the Sabbath fulfilled: Eucharist, rest, mercy, and a weekly protest against slavery to work.

For reflection

  1. Rescue precedes command. When you imagine God’s commands, do you instinctively hear a liberator or a taskmaster — and where did that voice come from?
  2. Run the Catechism’s idol audit honestly: power, pleasure, reputation, nation, money, productivity. Which one would hurt most to lose — and what does that tell you?
  3. Track your speech for a day: how do you actually use God’s name — and what would it mean to speak about people the way the second commandment teaches you to speak about God?
  4. What would a real Sabbath practice cost you — and what is the current pace of your life quietly confessing about who you think holds the world up?

Check your understanding

Answer at least 4 of 5 correctly to complete the lesson. Every answer is in the lesson above.

  1. What comes before the commandments in the Decalogue’s own text?

  2. Which of these does the Catechism name among modern idolatries?

  3. How does the Church distinguish veneration of images from idolatry?

  4. What does the Catechism call the Sunday Eucharist?

  5. In Scripture’s telling, Sabbath rest is grounded in what?