Language is a perilous thing. It can unite us, but quite often it does the opposite. That, by the way, was God’s intent. We know that from the story of how He created the different languages of the earth as presented in Genesis 11:
Now the whole earth used the same language and the same words. It came about as they journeyed east, that they found a plain in the land of Shinar and settled there. They said to one another, “Come, let us make bricks and burn them thoroughly.” And they used brick for stone, and they used tar for mortar. They said, “Come, let us build for ourselves a city, and a tower whose top will reach into heaven, and let us make for ourselves a name, otherwise we will be scattered abroad over the face of the whole earth.” The Lord came down to see the city and the tower which the sons of men had built. The Lord said, “Behold, they are one people, and they all have the same language. And this is what they began to do, and now nothing which they purpose to do will be impossible for them. Come, let Us go down and there confuse their language, so that they will not understand one another’s speech.” So the Lord scattered them abroad from there over the face of the whole earth; and they stopped building the city. Therefore its name was called Babel, because there the Lord confused the language of the whole earth; and from there the Lord scattered them abroad over the face of the whole earth. (Genesis 11:1-9 NASB, emphasis added)
Ever since then that curse of language has been with us. And, by the way, so has the curse of nations.
Curse of nations? Yes, it does seem to be a curse. It would seem that the Lord did not intend for humanity to be scattered and separated across the face of the planet in competing factions. Nevertheless, nations were His idea. The story of the Tower of Babel explains why. You’ll notice that mankind also had an idea of uniting themselves as one people, but their idea was not the same as the Almighty’s. They wanted to be a single, unified power that could challenge YHVH for sovereignty over this planet. Since these people lived in the generations immediately after the Great Flood, we can suppose that some of them harbored a little resentment at God’s destruction of the pre-Flood civilization. Maybe they thought they could do things better than their ancestors, perhaps by building a strong defense that could ward off any further Divine intervention in human affairs. Now since our God does not change (Numbers 23:19; I Samuel 15:29; Malachi 3:6; James 1:17; Hebrews 13:8), and since the eternal governing principles of the universe which He established do not change (Psalm 119:44; II Kings 17:37; Matthew 5:18, 24:34-35; Mark 13:31; Luke 21:33), He had to do something about this blatant rebellion. There can only be one God, after all.
The problem with sin is that it seeks to create many gods – in fact, as many as there are human beings on the earth. That is at the heart of Satan’s insidious deception spoken to our mother Eve: “For God knows that in the day you eat from it your eyes will be opened, and you will be like God, knowing good and evil.” (Genesis 3:5 NASB) Tragically, the way our Creator dealt with the deception before the Flood was to destroy humanity. I would surmise He had little choice in the matter since all of humanity apparently was united as a single people, most likely under satanic leadership (not unlike the world we are anticipating at the end of this age when Messiah returns). To make sure He did not have to make a complete end of the human race this time around, the Lord God created nations and then scattered them across the earth. If they were divided in language, they would soon be divided in every other imaginable way, and the resultant wars and rumors of wars would ensure that a united human empire would not arise to defy the Living God until the end of days. In the meantime the Living God could go about the process of cultivating His redemptive work in human hearts while they remained in the nations.