Start with the distinction that resolves most attacks before they land: the difference between the Church’s teaching and the sins of her members. The Church is indefectible — her doctrine will not fail1 — but she has never claimed her members, or even her popes, are impeccable. “The Church did this” almost always means “some Catholics, sometimes clergy, did this,” and the Faith has always named those sins for what they are. St. Paul stated the principle: “we have this treasure in earthen vessels, that the excellency may be of the power of God, and not of us” (2 Corinthians 4:7). A cracked vessel does not prove the treasure false.

Then ask for specifics. Most attacks arrive as slogans — the Inquisition, the Crusades, Galileo, “the Church opposed science” — and a slogan collapses into actual history the moment you ask, “what exactly happened, and according to whom?” The popular versions are usually inflated, stripped of context, or simply false (the Inquisition’s real death tolls, for example, were a small fraction of the legend). You are allowed to say, “I don’t know that one — let’s look it up,” which is more honest, and far more disarming, than bluffing.

And concede what is real. There were corrupt popes, cruel inquisitors, and genuine scandals; pretending otherwise wrecks your credibility and is not even Catholic — the Church canonizes saints precisely because holiness is the costly exception. The Reformation happened partly because real abuses went uncorrected too long. So concede the fault cleanly, once — then make the distinction that matters: the sin was a betrayal of the Church’s teaching, never an expression of it.

Underneath it all is a promise, not a boast. Christ never said His Church would be staffed by perfect men; He said the gates of hell would not prevail against it — and a Church that has survived two thousand years of its own worst members is itself a strange kind of evidence. The full answers to the common objections are worth having ready before you need them.