What does Genesis 11:9 mean?
Verse 9 sums up God's act of judgment with a play on words. The word for the name of the city Babel is very similar in Hebrew to the word for "confused." In fact, the whole section of verses 1 through 9 includes several allusions, in the Hebrew language, to the name of Babel. It is very likely that Babel became known as Babylon, the great and ancient city that became a seat of power in the world. This city, in fact, would later become symbolic of the man-centered, worldly system which sets itself against God.Later, the Babylonians were quite proud of their impressive city. God's people understood, however, that the city's history was evidence that human pride and arrogance cannot stand against God. He stops the plans of humanity anytime He chooses to do so (Job 42:2).
One day, though, God will create a new kingdom with a single language and culture once again. Zephaniah 3:9–11 describes that moment, and the Holy Spirit's act of uniting the languages at Pentecost may hint at it as well (Acts 2:6–11).