Truthlover, you are implying that all the Bible content has significant meaning for everyone. A better question to ask is "Why was this text included in the Bible?"
In the first four centuries there were 'christ' cults galore in the Roman Empire. Mithraism, Orphism and Gnostics to mention a few. Many of of the newer sects became in competition with each other for dominance and authority. In the early fourth century, as a political manoeuvre it was Emperor Constantine's desire to unify all religious belief under the imperial umbrella and eventually all were forbidden except one; the cult of Jesus as interpreted by the Bishops of Rome. Constantine (a saint in the Eastern Church) was a ruthless and unconscionable human being but thought that his mother's religion could bring him luck in battle, so he favoured the sect she belonged to. Constantine made sure that the Bishops greatly modified the Jesus story to make its appeal universal and acceptable to all prevailing mainstream temple worshippers and then later, by imperial decree all opposing ideas and folk beliefs were outlawed and their literature destroyed. Thus began Christianity.
With an understanding of the social and political history of the time and the recognition that the Bible is not "inspired of God", it is possible to read the early texts of Jesus-Christianity as competing sects who were defending their ideological 'turf'. This is why the issues of loyalty and heresy are clearly present in the NT. A good example is where Paul has one of his hissy fits recorded in Gal 1;6-8.