Pillar III — How We Live
The Ten Commandments
"If you love me, you will keep my commandments" (John 14:15). The Decalogue is not a cage — it is the shape love takes when it is lived out faithfully, given by a Father who wants His children to flourish.
God gave the Ten Commandments to Moses on Mount Sinai after freeing Israel from slavery in Egypt (CCC 2056–2061) (Exodus 20). They fall naturally into two tables: the first three commandments concern our love of God, and the last seven concern our love of neighbor (CCC 2067) — exactly the "two greatest commandments" Christ later named as the summary of the whole Law: to love God with all your heart, and your neighbor as yourself (CCC 2055) (Matthew 22:37–40).
Two Tables, One Law
Commandments 1–3: Love of God
Commandments 4–10: Love of neighbor
"On these two commandments depend all the law and the prophets." — Matthew 22:40
+II am the Lord your God; you shall not have strange gods before me
The first commandment calls us to worship God alone, with faith, hope, and love that outrank every other loyalty (CCC 2084–2086). It forbids idolatry — placing anything above God, whether an image, an ideology, money, or even a good thing like career or comfort — and calls us instead to a life ordered entirely around Him (CCC 2113).
+IIYou shall not take the name of the Lord your God in vain
God's name is holy. This commandment calls us to reverence in how we speak of God, to keep our oaths and promises, and to use the divine name only in prayer, praise, and blessing — never carelessly or as a curse (CCC 2142–2149).
+IIIRemember to keep holy the Lord's Day
+IVHonor your father and your mother
The first commandment concerning neighbor begins at home. Children owe their parents respect, gratitude, and obedience; parents owe their children love, formation in the faith, and a good example (CCC 2214–2226). The command extends by analogy to all legitimate authority exercised for the common good (CCC 2199).
+VYou shall not kill
Human life is sacred from conception to natural death because every person is made in the image of God. This commandment protects life directly — forbidding murder, abortion, and euthanasia (CCC 2258, 2270, 2277) — and indirectly, by calling us away from anger, hatred, and the neglect of those in need (CCC 2302).
+VIYou shall not commit adultery
This commandment protects marriage and calls every person, married or not, to chastity — the integration of sexuality into a life of authentic self-giving love, rather than self-gratification at another's expense (CCC 2337).
+VIIYou shall not steal
This commandment protects the right to private property and calls for justice in all our dealings — honesty in business, fairness to workers, care for the goods entrusted to us, and respect for what belongs to others, including the goods of the earth we all share (CCC 2401–2403).
+VIIIYou shall not bear false witness against your neighbor
+IXYou shall not covet your neighbor's wife
Where the sixth commandment governs actions, the ninth governs the heart: it calls for purity of desire and interior mastery over disordered longing, recognizing that sin is often conceived long before it is committed (CCC 2517).
+XYou shall not covet your neighbor's goods
The final commandment addresses envy and greed at their root, calling us to a spirit of gratitude and detachment — trusting that God provides what we need, rather than measuring our lives against what belongs to someone else (CCC 2534–2544).