Abstract: Guru Nanak, the great proponent of 15th-century humanism at the theater of Indian history, is considered an ideal of mutual harmony. He devoted his entire life to promoting harmony among people of different religions. Unlike an ordinary man, from his boyhood, Nanak began to find a unique way of bridging the gaps between the true meaning of life and the followers of different religions. His teachings form the basement of Sikhism and he is considered the first Guru of the Sikh religious tradition. The main objective of Guru Nanak's teachings can be said to be an attempt to establish world peace by ending communal conflicts. A task that he himself wanted to complete throughout his life. Through this article an attempt has been made to find out the relevance of the teachings of Guru Nanak Dev Ji which can guide towards a harmonious society.