How to Handle Critics
Granted, there are no two people alike. This is even evident in the American home where the divorce rate is about 50%. How much more is this true in Christian circles, where there are varying opinions and teachings--some of them very strong and dogmatic.
Who are we to believe? Since the born-again Christian believes in the priesthood of the believer (Revelation 1:6 and 5:10), which was also a major contention of Martin Luther with the Catholic Church, each man must do the best he can to be all he can be for the Lord. It is the Holy Spirit that helps guide the Christian (John:16:13: Howbeit when he, the Spirit of truth, is come, he will guide you into all truth: for he shall not speak of himself; but whatsoever he shall hear, that shall he speak: and he will shew you things to come.)
Of course, the problem comes with discerning whether or not it is the Holy Spirit or "another" spirit, which is not of God, that is leading you: Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world. I John 4:1
When it comes to "defending" the Catholic Church, Catholic apologetics are pretty slick and convincing. I know, I have read their arguements against us "fundamentalists." They are aware of "Catholic bashers" like David Cloud, Jack Chick, and others, who expose the false teachings of Romanism.