Baba Guru Nanak emphasised the importance of the worship of one God.
He insisted that caste, creed or gender was irrelevant for attaining liberation. His idea of liberation was based on the pursuit of active life with a strong sense of social commitment.
He used the terms nam, dan andisnan for the essence of his teaching, which actually meant right worship, welfare of others and purity of conduct.
He gave importance to right-belief and worship, honest living and helping others.