Guru Angad Dev Ji became the second Guru of the Sikh religion in 1539 after Guru Nanak Dev Ji. His period proved to be a blessing for the Sikh religion. Guru Sahib contributed to the development of the Sikh religion in the following manner:

1. Improvement in Gurumukhi Script: Guru Angad Dev Ji made improvements in the Gurumukhi script. In order to popularise Gurumukhi, Guru Sahib wrote ‘Bal Bodh’ to help the children learn the alphabet of Gurumukhi. The Gurumukhi was a common language of the people of the region. It helped in the promotion of Sikh religion. All the religious literature of Sikhism is written in Gurumukhi script.

2. The Janam Sakhi of Guru Nanak Dev Ji: Guru Angad Dev Ji instructed Bhai Bala Ji to write the Janam Sakhi of Guru Nanak Dev Ji. Guru Sahib also collected all the sayings of Guru Nanak Dev Ji. It helped the Sikhs to follow the true path shown by Guru Nanak Dev Ji. Guru Sahib himself also wrote Bani in line with the teachings of Guru Nanak Dev Ji.

3. The Langar System: Guru Aiigad Dev Ji continued the Langar system with full devotion. Langar was served to all the people without any distinction based on caste system. It helped in decreasing the feelings of inequality based on caste system and helped in spreading the message of Sikh religion.

4. Separating the Udasis from the Sikhs: The eldest son of Guru Nanak Dev Ji, Bhai Sri Chand had established the Udasi sect. He had popularised asceticism (Sanyas). The idea of asceticism was against the fundamental teachings of Guru Nanak Dev Ji. Guru Angad Dev Ji made it clear to his followers that the Sikh religion is a religion of householders. There was no place for ascetics (Sanyasis) in it. Guru Sahib declared that those Sikhs, who believed in asceticism, were not true Sikhs. In this manner, by separating Udasis from the Sikh community, Guru Sahib strengthened the Sikh religion.

5. Laid the foundation of Goindwal: Guru Angad Dev Ji founded the city of Goindwal. This city became an important Sikh religious centre during the period of Guru Amar Das Ji. Even today, it is one of the most important religious centres of Sikhism.

6. Enforced Discipline: Guru Angad Dev Ji maintained strict discipline in his Sikh community. He turned out Bhai Satta and Bhai Balwand out of Sikh Sangat for breaking discipline. However, on the request of Bhai Laddha, Guru Sahib pardoned them. This episode served as a warning to the in disciplined elements in the Sikh community.

It is true that Guru Angad Dev Ji had given a distinct identity to the Sikh religion by making improvements in Gurumukhi script. The Sikh followers got their own separate script and language. The langar system freed the Sikh religion from the influence of caste system. It helped Sikh religion to establish its own separate identity different from the Hindu religion. All the credit goes to Guru Angad Dev Ji for all such developments which made Sikh religion a distinct religion.