GOD, a term used to denote any object, of worship or evocation, signifies the belief of most modern religions in the existence of a Supreme Being who is the source and support of the spatio temporal material world. Theologians remember Him by the name of God. The fundamental belief of Sikhism, too, is that God exists, not merely as an idea or concept, but as a Real Being, indescribable yet not unknowable. The Gurus, however, never theorized about proofs of the existence of God. For them He is too real and obvious to need any logical proof.
GRANTHI, from the Sanskrit granthika (a relaier or narrator), is a person who reads the granih, Sanskrit grantha (composition, treatise, book, text). The terms are derived from the Sanskrit grath which means "to fasten, tie or string together, to compose (a literary work)." In Sikh usage, granih refers especially to the Guru Granth Sahib, the Scripture, and the term granihl is used for the officiant whose main duty it is to read the Holy Book in public. The granth`i`s, the principal religious official of Sikhism, but should not be thought of as a "priest" in the usual sense.