Guru Ram Das had sent his youngest son, Arjan, away to do some work for the Guru. From his longing to be with his father he wrote a series of beautiful letters. His older brother became very jealous and showed himself not worthy of the Guruship. Arjan wrote the letters with such devotion and longing that they have the power of 1,000 shabds. For this reason it came to be called "Shabd Hazare".The Gaddi was given to him and he became Guru Arjan Dev ji.
Guru Amar Das, the third Guru, was becoming old and it was time to decide who had the selflessness to carry on the light of Guru Nanak. He tested both of his son-in-laws, Bhai Rama and Bhai Ram Das. He made them build platforms for him to meditate on. When the son-in-laws made the platforms, the Guru rejected their work. He continued to have them build and tested their devotion to see who would truly be selfless.......
Once Guru Nanak went on a long walk with all his dicsiples. As they were walking some people found money on the ground and they went home. After a long, long distance only two Sikhs were left. Guru Nanak told them to eat a dead body. One Sikh couldn't do it, but Bhai Lehna humbly obeyed. Lehna's devotion surpassed all tests. He was so devoted he was like an 'ang' a limb of the Guru.
A king with his army visited Guru Gobind Singh ji. The king obviously thought his army was superior to the Guru's so the Guru decided to teach him a kind lesson. Guru ji asked his Sikhs to use themselves as targets to test a new gun he had received. Two Sikhs wanted so much to give their lives for the Guru they fought over who would be the target. The proud king was greatly humbled.