Know what you believe. Answer with charity.
A Catholic field guide for meeting hard questions honestly—with Scripture, reason, history, and the teaching of the Church.
“Put on the whole armour of God, that you may be able to stand against the wiles of the devil.” — Ephesians 6:11
Christian Armory is a field guide, not the final word. It’s here to point you in the right direction and help you defend the faith with clarity and charity — but no website finishes the journey. Growing in faith takes a lifetime; for deeper questions, please speak with your parish priest.
- Hear it fairlyState the objection in its strongest form.
- Make distinctionsClarify what the Church actually claims.
- Give reasonsUse evidence without hiding the difficulty.
- Invite dialogueDefend the faith without treating people as enemies.
New to the armory?
Start here
Eight defenses, in order — from “Does God exist?” to the Eucharist. About twenty minutes, and you’ll hold the skeleton key.
Answers ready when you are
Every defense is numbered in order — swipe or arrow through them all, or jump straight to one from Browse above. Each entry states the objection in its strongest form, then answers with a Catholic response, a practical one-liner, and connected topics.
How to use the defenses
Difficulty tells you how much background an answer assumes. Defined doctrine means the Church has taught it definitively; theological reasoning argues from Scripture and tradition; historical record turns on the facts of history. Most defenses blend all three — the label names the main ground the answer stands on. Catholic teaching marks defenses of distinctively Catholic doctrine — handy if you’re coming from a Protestant background; common ground marks answers most Christians share.
Pocket armory
Every one-liner in one place. Search it, copy it, and open the full defense when you need more than a sentence.
Seven sacraments every Catholic should know
Seven sure encounters with Christ’s grace, instituted by Him and entrusted to the Church. Swipe through them — each with its Scripture, and its defense in the armory.
The Catechism, on hand
Every “CCC” reference on a defense card opens the real paragraph — tap one and see for yourself. Or look up any of the 2,865 paragraphs below.
Catechism text © Libreria Editrice Vaticana. Official text at vatican.va.
Test yourself
Read the objection, answer it in your own words — then flip for the one-liner. Keep score honestly. The armory trains, not just informs.
Objection
The one-liner
Objection
The Armory’s answer
Glossary
The words the cards use and the objections assume. Know them, and you’ll follow the argument wherever it goes.
Meet the Apostles
The men behind the mission — what Scripture says, what tradition hands down, and an honest label for how certain each part is. Fourteen entries, not twelve: the Twelve as restored with Matthias, plus Paul the apostle to the Gentiles — and Judas Iscariot, whose betrayal belongs to the story too.
Three churches, one ancient faith
The Catholic Church, the Eastern Orthodox churches, and the Oriental Orthodox churches all trace their bishops back to the apostles — and the Catholic Church recognizes their sacraments as valid. They are not in full communion with one another, and the differences are real. But the faith they share is older than every division between them.
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One Creed
All three profess the Nicene Creed — one God, Father Almighty; Jesus Christ, “God from God, Light from Light, true God from true God, begotten, not made, consubstantial with the Father”; the Holy Spirit, “who proceeds from the Father.” The baptismal faith of the ancient Church, unchanged at its core since 381.
Where they differ: the West added “and the Son” () to the third article; the East never accepted the addition.
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Seven sacraments
Baptism, Confirmation (Chrismation), the Eucharist, Confession, Anointing of the Sick, Holy Orders, and Matrimony — all three celebrate the same seven mysteries instituted by Christ, and the Catholic Church recognizes Orthodox sacraments as valid.
Where they differ: details vary — the East chrismates infants at baptism; the West confirms years later.
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Bishops in succession
Each is led by bishops ordained in an unbroken line from the apostles, offering true sacrifice and true sacraments. This is why the Catholic Church calls them true particular Churches, not mere denominations.
Where they differ: none accepts the pope’s universal jurisdiction. That claim is Catholic alone.
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The real presence
All three believe the Eucharist is truly the Body and Blood of Christ — not a symbol, not a memorial only.
Where they differ: the West explains it as ; the East leaves it a holy mystery. And they do not commune together — the wound is real.
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Mary and the saints
All three call Mary — God-bearer — as defined at Ephesus in 431, honor her above all creatures, ask the saints’ intercession, and venerate icons.
Where they differ: the Immaculate Conception and the Assumption as defined dogmas are Catholic; the Orthodox honor Mary’s holiness and her Dormition without defining them the same way.
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The councils
Nicaea (325), Constantinople (381), Ephesus (431) — the councils that gave us the Creed and defended Christ’s divinity and Mary’s title — belong to all three.
Where they differ: Chalcedon (451) parted East from Orient — the Oriental Orthodox reject its formula — and the later councils part Catholic from Orthodox.
This shared faith is why the remaining differences deserve your hardest thinking — above all the papacy. See defense #52.
Heard an objection we haven’t answered?
Send it in. Submissions come straight to the keeper of this armory — nothing is published without review. The strongest ones become new defenses.
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