As a result of post-modernism, truth is publicized as relative. Meaning, truth is truth for you but is not necessarily truth to me. I have my truth and you have yours. Relativism is values and judgments differing according to circumstances, persons, cultures, etc. Relativism destroys truth.
I do not espouse intolerance, but The Truth. There can only be one truth. Our world is under the deception that, “Good Christians Should Accept Other Faiths!” or “Or Just Accept People As They Are!” Many quote the words of Paul, “Love Beareth all things, believeth all things, hopeth all things, endureth all things.” (1 Corinthians 13:7 ) They use this text to imply that Christians are taught to, essentially, compromise their beliefs for the beliefs of others. This is not what Paul had in mind here. “Love bears all things: the Greek verb is related to the word for a roof. It may mean, "supports or carries the universe," but more probably Paul means here that love bears or endures all kinds of ill treatment.”
Webster’s defines tolerance as, “The endurance of the presence or actions of objectionable persons, or of the expression of offensive opinions; toleration.” Today, however, a NEW definition of tolerance is being touted. For example, Josh McDowell in his book The New Evidence That Demands a Verdict quotes Thomas A. Helmblock, exec. VP of Lambda Chi Alpha frat. He says this, “the definition of new…tolerance is that every individual’s beliefs, lifestyles, and perception of truth claims are equal…your beliefs and my beliefs are equal, and all truth is relative.” Obviously, this definition is invalid and does violence to the original meaning of tolerance.
Philosophers maintain that truth is what is relevant to our reality or life and false if it is not. Truth then becomes subjective or merely personal. This is an attempt to make truth inclusive, which defies its obvious nature, which is in some way exclusive from non-truth. Truth must, as a consequence of its nature, exclude as false that which is NOT true. Norman Giesler, a noted Christian philosopher said, “What is true will be relevant, but not everything relevant is true. A pen is relevant to an atheist writer. And a gun is relevant to a murderer. But this does not make the former true or the latter good. A truth about life will be relevant to life. But not everything relevant to one’s life will be true.”
Those who feel truth is relevant end up in a pool of uncertainty and basically asserting that truth is not knowable. Some have said, “We cannot know truth, it is unknowable.” That is a self-contradicting statement. One who says such things is making an absolute claim to “know”. You cannot say absolutely that truth cannot be known in a truth statement. To suggest we cannot know anything is to contradict oneself because one has just expressed a positive knowledge of something.
Some reply to Pentecostal certainty with, “How do you know you are not wrong?” This question is foolish because it assumes that truth is vague or even relative to you and puts the basis of truth on humanity and not the scriptures. The same can be asked of anyone who claims absolute truth. A reply to such a question could be, “How do you know that I am?” Hopefully, this will bring the focus back to the scriptures.
It is true that Austin is the capital of Texas; there is exclusively no other city that can hold that title. In fact, no other city in America or the World can lay legitimate claim to being the capital of Texas. Therefore, just because one city is the capital of Texas does not mean the people who hold to this truth are intolerant. It simply makes that person correct about the capital city of Texas. The same is true about Christianity. If the claims of the Christian faith are true—then Christians who believe and teach this are not intolerant. They are only correct.
Geisler wrote, “Surely, it is good to admit the possibility that one might be wrong and never good to maintain a position no matter what the evidence is against it. Also, one should never make a firm decision without examining all the evidence without prejudice. That is the half-truth that ropes us into this view, but a half-truth is a whole lie. Are we still to remain open-minded when all reason says that there can be only one conclusion? That is the same as the error of the closed mind. In fact, openness is the most closed-minded position of all because it eliminates any absolute view from consideration. What if the absolute view is true? Isn’t openness taken to be absolute? In the long run, openness cannot really be true unless it is open to some real absolutes that cannot be denied. Open-mindedness should not be confused with empty-mindedness. One should never remain open to a second alternative when only one can be true.”
Paul urged the Ephesians to speak the "truth in love" (Ephesians 4:15). Notice he maintains that truth should be presented yet done so in love. The Greek word for love in the text is agape, this type of love is rooted in concern and interest  for the other person and not selfish gain or selfish motives. Paul does not say that we will be understood all the time or that truth speakers will always be accepted. In fact, this is not the case many times. Yet, truth must be proclaimed. Truth is the opposite of non-truth. Our world is wasting in the pool of confusion and uncertainty because to humanity truth has become a situational and merely personal. Jesus said that we will know truth and that truth will set us free (John 8:32), free from darkness, free from uncertainty, free from depression, and free to know the truth of a loving Savior.
 The UBS Handbook Series. Copyright (c) 1961-1997, by United Bible Societies
 Josh McDowell, The New Evidence That Demands A Verdict, “Introduction” pg. xxxix Thomas Nelson Publishers © 1999 by Josh D. McDowell
Geisler, N. L. (1999). Baker encyclopedia of Christian apologetics. Baker reference library (Page 742). Grand Rapids, Mich.: Baker Books.
Geisler, Norman L., and Ronald M. Brooks. When Skeptics Ask. Wheaton, Ill.: Victor Books, 1990.