What is a poem regarded as a sacred book of religion?

The Sea of Sur Poems is regarded as a sacred book of religion and a hymn read in religious celebrations, and Surdas is also regarded as a religious saint. However, unveiling the veil of praise for the gods in long poems is a vivid, interesting and romantic portrayal of people's life in medieval India. The emotions of the hero and heroine in the poem are full of human feelings, and the whole poem exudes a strong flavor of life.