Original: Transfer from India to Japan Her Sanskrit name is "Sarasvatî Devî", which means "flowing water", and so Benzaiten is the goddess of everything that flows: water, words (and knowledge, by extension), speech, eloquence, and music.
Simplified: Her Sanskrit name is "Sarasvatî Devî", which means "flowing water", this is why Benzaiten is the goddess of everything that flows: water, words, speech, and music.