And Guru Hargobind, as legend has it, on direction from his father before he would die, tells him that the Sikhs need to protect themselves. They need to adopt a military tradition to protect themselves from the oppression, especially the oppression from the Mughals. And so Guru Hargobind, he is famous for establishing the military tradition of Sikhism. He is the first guru to be what you could call a warrior saint. He is famous for wearing two swords, one to represent his authority in the spiritual realm, and another to represent his authority in the temporal realm. He also has the longest tenure as guru. At Guru Hargobind's death, his grandson, Guru Har Rai, becomes guru.