George Leo Haydock

Prove all things. That is, examine prophecies whether they be true, and the doctrine which you hear from new preachers, and refrain yourselves not only from evil, but from every thing that hath the appearance of evil, and which may disedify and scandalize others. (Witham) — Hold that which is good. This we can best learn from the doctrine of the apostles, and the spirit of the Catholic Church. Men can deceive and be deceived, but the Spirit of God, speaking to us by his Church, can neither deceive us nor be deceived.