Shankaracharyas believe in the doctrine of Advaita Vedanta, asserting the non-dual nature of reality and the identity of the individual self with the supreme self. They consider Brahma, Vishnu, and Mahesh as immortal and emphasize the oneness of God and soul. Sant Rampal Ji Maharaj, however, contradicts this by showing scriptures, asserting that Brahma, Vishnu, and Mahesh are mortal sons of Sadashiv and Durga.