Vishnu Sahasranamam contains a list of 1,000 names of Lord Mahavishnu, one of the main deities in Hinduism and the supreme God in Vaishnavism. It is one of the most sacred and popular stotras in Hinduism.
In Mahabharatha, Bhishma recited the 1000 names of the supreme lord Mahavishnu when he was lying in the arrow bed in the battlefield Kurukshetra. Bhishma mentions that mankind will be free from all sorrows by chanting Vishnu Sahasranamam. Chanting or hearing to Vishnu Sahasranamam will calm your mind, complete freedom from stress and brings eternal knowledge.