No word but its own may be allowed sanctity and sovereignty. One of the greatest glories of the Guru Granth Sahib is its catholic character. Hardly any other scripture of that stature is completely free from bias, animus and controversy. Indeed, the uniqueness of the Granth in this respect is all the more astonishing when we think of the obscurantism, factionalism and fanaticism of the period in which it was composed.
Perhaps it is the only scripture of its kind which contains within its sacred covers the songs, hymns and utterances of a wide variety of saints, sages and bards. For, it is instructive to note that a fairly substantial part of the volume carries the compositions of Hindu bhaktas, Muslim divines, Sufi poets and other God-intoxicated souls. Of course, their hymns and couplets rendered in their own idiom find a ready correspondence in the songs of the Sikh Gurus. Obviously, the idea of Guru Arjan Dev was to affirm the fundamental unity of all religions, and the unitary character of all mystic experience. It was, so to speak, an integral congress of minds and spirits operating on the same spiritual beam.