Similar things have happened with religious beliefs​—where immense contradictions exist. (1 Timothy 4:1; 2 Timothy 4:3, 4) One man has deep faith in God. Another says that the man is only “weaving faith out of moonshine.” One maintains that you have an immortal soul that survives death. Another believes that when you die you cease to exist, totally and completely. Obviously, conflicting beliefs like these cannot all be true. Is it not the course of wisdom, then, to make sure that what you believe actually is true and not simply what you want to believe? (Proverbs 1:5) How can you do that? The following article will examine this subject.

WHY, though, would anyone want to change his religion or belief? “I have my own beliefs, and I am happy with them,” is the commonly expressed view. Many feel that even mistaken beliefs cause little harm to anyone. Someone who believes that the earth is flat, for example, is not likely to hurt himself or anyone else. “We should just agree to differ,” some say. Is that always wise? Would a doctor simply agree to differ if one of his colleagues continued to believe he could go straight from handling dead bodies in a morgue to examining sick patients in a hospital ward?

When it comes to religion, mistaken beliefs have historically caused great harm. Think of the horrors that resulted when religious leaders “inspired Christian zealots to pitiless violence” during the so-called Holy Crusades of the Middle Ages. Or think of the modern-day “Christian” gunmen in a recent civil war who, “just like medieval warriors who had saints’ names on their sword hilts, taped pictures of the Virgin to their rifle butts.” All these zealots believed that they were right. Yet, obviously in these and other religious struggles and fights, something was terribly wrong.