such as Dyaus Pita (the sky), Prithivi (the earth), Surya (the sun), Vayu (the wind), Apas (the waters), Parjanya (the rain), Vac (the word), many rivers (notably the Sapta Sindhu , and the Sarasvati River ). Groups of deities are the Ashvins , the Maruts , the Adityas , the Vishvadevas