John 14:26: “But the Counselor, the Holy Spirit, whom the Father will send in my name, he will teach you all things, and bring to your remembrance all that I have said to you.”
Acts 1:8: “But you shall receive power when the Holy Spirit has come upon you; and you shall be my witnesses in Jerusalem and in all Judea and Samaria and to the end of the earth.”
Matthew 28:18-20: And Jesus came and said to them, “All authority in heaven and on earth has been given to me. Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, teaching them to observe all that I have commanded you; and lo, I am with you always, to the close of the age.”
John 14:16-17: “And I will pray the Father, and he shall give you another Counselor, to be with you for ever, even the Spirit of truth, whom the world cannot receive, because it neither sees him nor knows him; you know him, for he dwells with you, and will be in you.”
God cannot lie. If the Holy Spirit is the true teacher of the apostles and the guardian of the truth in the Catholic Church, as the bible indicates, then we can be confident in the matters of faith and morals the Church offers us. The Church must be infallible if we are to be assured in not losing our way. Those who contend that the Catholic Church fell into error and adulterated the Gospel should be made aware that they insult both our Lord and the Holy Spirit. Fidelity to Christ and the Church, “the pillar and ground of truth” is urged by St. Paul, especially since even early on he could write: “For some have already strayed after Satan” (1 Timothy 5:15). This is often the case for those deafened and blinded to the Catholic Church’s message.