Final answer:
Guru Amardas Ji refused Emperor Akbar's offering of village revenues for the Guru-ka-langar to maintain the self-sufficiency and independence of the Sikh community's spiritual institutions, emphasizing the collective effort and devout contributions over political patronage.
Step-by-step explanation:
Guru Amardas Ji refused Emperor Akbar's offering of village revenues for the Guru-ka-langar because of a commitment to the principle of self-sufficiency and the collective effort of the Sikh community. In particular, Guru Amardas Ji believed in the importance of the langar being supported by the devout contributions of the community, ensuring both the physical and spiritual nourishment of all, regardless of caste, creed, or economic status. This was also in alignment with ensuring that religious institutions maintained independence from political powers, which is vital to uphold spiritual integrity and autonomy.
Emperor Akbar, known for his policies of religious tolerance and his attempts to create a syncretic religion, might have understood the significance of independence for religious establishments. Moreover, the period under discussion was characterized by complex relationships between various religious groups and the ruling empire, and Guru Amardas Ji's decision would have been made in the context of maintaining the Sikh community's integrity and autonomy from Mughal influence.