This follower of non-dualistic vedanta and a priest of kali in calcutta is known as perhaps the greatest religious reformer of the nineteenth century.

The answer to this question is Sri Ramakrishna Paramahamsa.

Sri Ramakrishna Paramahamsa was an Indian mystic who was born on February 18, 1836 and who was known as the founder of Ramakrishna order. He shares his learnings about God by using parables and metaphors in a simplest form he can and one of his disciples wrote a book named “The Gospel of Sri Ramakrishna”. 

This follower of non-dualistic vedanta and a priest of kali in calcutta is known as perhaps the greatest religious reformer of the nineteenth century is srirama krishna paramahamsa

he did it to save us from our sins, so we can see him in heaven 1 day. it's because he loves us so much. he used himself as the final sacrifice, so that we could be forgiven for our sins, so that we can see him in heaven, if we believe.

judaism, christianity and islam, are all abrahamic religions and therefore have in common the hebrew idea of a single god which is the source of all morality. the idea of the covenant is only related to judaism, while dharma is a concept of indian religions and the four noble truths are basic principles of buddhism.