Babel in biblical terms is a city in the Middle East. You can find the story of Babelk in the Bible in Genesis 10 and 11. It comes from the descendants of Noah who spoke only one language that wanted to try to build a tower to reach Heaven to try to be better than all the others. So God got mad and confused the builders by making them speak in different tongues. Which really is how there are all different languages in the world now.