The story of Babel is maybe the most famous Bible story of all time, its contained in the Book of Genesis, chapter 11, here it is simplified.
Ancient Babylonians decided they did not want to be forgotten with time, they wanted to remain immortal in the eyes of their descendants, by so they gathered all of humanity to build a tower that would reach the heavens and gods themselves, in order to take them down and be immortal.
However this plan backfired when God/Gods ruined it by scattering all of humanity all over the globe and giving them each different languages in a way that they never work together to complete such a tower.
This story might seem far fetched, but the meaning in this story could mean something else, either way this tablet that was found showcases King Nebuchadnezzar II leading the construction of such a tower could mean it did exist in some point, regardless of what they were trying to achieve. King Nebuchadnezzar II is said to be the ruler of the Babylonia during the time the plan took place.