You do not have to believe anything to start here. These steps take the big questions slowly and honestly: is anyone there, who is Jesus, and why would anyone join a Church?
Science explains more every decade without needing God. Every argument for God has a famous rebuttal, and the burden of proof is on the one making the claim. If there were a God, it should not be this hard to tell.
The strongest reply
The Church holds that God can be known with certainty from the created world by the natural light of human reason. CCC 36 Its arguments start not from gaps in science but from why anything exists and changes at all. CCC 31CCC 32
Children get cancer. An all-good, all-powerful God would stop it. Either He cannot, or He will not, and either way He is not the God Christians describe.
The strongest reply
The Church says no quick answer will suffice, and that only the Christian faith as a whole answers it. CCC 309 God permits evil out of respect for freedom and can bring good out of it, and He entered suffering Himself on the cross. CCC 311CCC 312
If God wanted a relationship with everyone, He would make Himself obvious. Many sincere seekers find nothing. Silence from heaven looks exactly like what we would expect if no one is there.
The strongest reply
The Church teaches that God tirelessly calls each person, even one who hides from His face or accuses Him of abandonment. CCC 2567 Faith is a free response, and nobody is forced to embrace it. CCC 160
Every age has its miracle stories, and they shrink as investigation improves. A law of nature is our best evidence of how things always go, so a miracle report is always less likely than error or legend.
The strongest reply
The Church teaches that Jesus’ signs attest that the Father sent Him and invite belief, yet can also be an occasion of offense. CCC 548 It treats miracles as motives of credibility that make faith reasonable, not as proofs that force it. CCC 156
Dead men stay dead. Grieving followers have visions, stories grow in the telling, and the earliest Gospel ends abruptly at an empty tomb. A legend is always more probable than a resurrection.
The strongest reply
The Church calls the Resurrection a real event with manifestations that were historically verified, noting Paul’s list of witnesses written around AD 56. CCC 639 It points to the disciples’ faith being drastically tested by the Passion, so they weren’t primed to invent it. CCC 643
The Gospels were written decades later by believers, not neutral reporters. They disagree on details and were copied by hand for centuries. Why treat them as history at all?
The strongest reply
The Church distinguishes three stages in the formation of the Gospels and unhesitatingly affirms their historicity: they faithfully hand on what Jesus really did and taught. CCC 126
If you had been born in Delhi or Riyadh you would believe something else. Thousands of religions each claim to be true. It is arrogant to think yours is the one.
The strongest reply
The Church recognizes goodness and truth in other religions as a preparation for the Gospel. CCC 843 It teaches that those who, through no fault of their own, don’t know Christ but seek God sincerely may be saved, while still proclaiming Christ. CCC 847CCC 848
Abuse by priests, cover-ups by bishops, crusades and inquisitions. An institution that claims to speak for God has repeatedly behaved worse than many secular ones. Its own record refutes its claims.
The strongest reply
The Church calls herself at once holy and always in need of purification, and says all her members, ministers included, must acknowledge that they are sinners. CCC 827 It teaches that scandal is gravest when caused by those with authority. CCC 2285