K. J. Duursma made the observation: “Secular linguists are puzzled by the existence of twenty or so language families in the world today. The languages within each family (and the people that speak them) have been shown to be genetically related, but few genetic links have been observed between families. This is a problem for secular linguists. If, as they believe, man evolved from an ape-like ancestor, man would at some point have gained the ability to speak. This process of change would actually be superbly dangerous, as they admit. But still, if speech did evolve somewhere, somehow, we would expect to find that all languages are genetically related. They clearly are not” (The Tower of Babel account affirmed by linguistics).
You see, today, we have over 6,000 languages, but these all come from those 20 language families.