Why should we keep the Lord's Day holy?
The short answer
The Third Commandment — "remember the sabbath day, to keep it holy" — calls us to set aside a day for God and for rest. For Christians this is Sunday, the day of Christ's resurrection: a day to worship God (above all at Mass) and to step off the treadmill of work for genuine rest, family, and refreshment. It's less a restriction than a gift.
Full explanation
This commandment is rooted in the very rhythm of creation: God "rested" on the seventh day, and built a pattern of work and rest into the world. The Sabbath was God's gift to a people who had been slaves in Egypt, worked without pause — a weekly declaration that they were no longer slaves, that their worth wasn't measured only by output, and that the world keeps turning even when they stop. To keep the day holy is to trust God enough to rest.
For Christians, the day shifts to Sunday, "the Lord's Day," because that's when Jesus rose from the dead — the new creation breaking in. Sunday doesn't simply rename the Sabbath; the Church teaches that the Lord's Day fulfils and replaces it. It is the original Christian feast, gathering two great strands: worship and rest.
Worship is central. For Catholics, the heart of keeping Sunday holy is the Mass — which is why the Church teaches that attending Sunday Mass is a serious obligation, not because God needs our attendance, but because we need the encounter. The Church is candid about the weight of this: to skip Sunday Mass deliberately, without a serious reason, is a grave sin — not a minor lapse. And beyond any single Sunday, to neglect the worship of God week after week is to let the most important relationship of our lives quietly starve. (Genuine impediments — illness, caring for someone, essential work — are understood and excuse the obligation.)
Rest is the other half, and our culture badly needs it. The commandment asks us to refrain from unnecessary work and the grind of business so we have space for God, for family and friends, for the poor and lonely, for the body's renewal, and for the simple goodness of unhurried time. In a world that treats busyness as a virtue and rest as laziness, deliberately guarding one day is countercultural and humanising.
So the Third Commandment isn't a killjoy rule against doing things on Sunday. It's a weekly invitation to remember who you are: not a machine, but a beloved child of God, made for worship and for rest.
Why this matters
Without a built-in pause, life collapses into unending work and distraction, and God gets crowded out. The Sabbath principle protects two things our culture is starving for: a living relationship with God, and genuine rest. A person who keeps a real day for God and others tends to be more human, more grounded, and less enslaved to productivity than one who never stops.
Myth Common misunderstanding
One misunderstanding treats Sunday Mass as an arbitrary box to tick under threat. It's better understood as the lifeline the day is built around — the encounter that feeds everything else. The opposite misunderstanding reduces the commandment to "just don't work on Sunday," forgetting the worship at its heart, or to "go to Mass" while ignoring the call to genuine rest and works of mercy.
Scripture connections
- Exodus 20:8-10 — "remember the sabbath day, to keep it holy."
- Genesis 2:2-3 — God rests on the seventh day and makes it holy, the pattern behind the commandment.
- Mark 2:27-28 — "the sabbath was made for humankind, not humankind for the sabbath"; it's a gift, and Jesus is its Lord.
- Deuteronomy 5:15 — the Sabbath tied to liberation from slavery in Egypt.
- Hebrews 10:25 — do not neglect "to meet together," the call to communal worship.
Church teaching references
Reflect
What would it take to reclaim one genuine day a week for God, rest, and the people you love — and what keeps crowding it out?