I cannot say that Jesus said a completely new truth but he had certainly made his original contribution to the spiritual evolution of humanity. There are two important spiritual spiritual traditions one is the prophetic tradition and other is the wisdom tradition.Religions like Judaism,Christianity,Islam and Bahai belong to the prophetic tradition. Religions like Hinduism,Buddhism,Jainism and Taoism belong to the wisdom tradition.
The prophetic tradition believes in a God,who is the creator of the universe and human beings are creatures of God and there is a gulf between God and creatures. The Wisdom religions do not believe in a creator God. The predominant system in Hinduism is called advaita vedanta, which says that Brahman(God) alone is Real or eternal and creation is maya or unreal or non-eternal and human soul is ultimately one with Brahman.
The contribution of Jesus to the prophetic tradition was to elevate the human consciousness from being a creature to oneness with God. When Jesus Christ said that 'the Father and I are one', he elevated the love of God from dualistic love of God to non-dualistic love of God. He also expanded the love of neighbour from the fellow Jew to the whole of humanity and of creation.Hence the contribution of Jesus to the prophetic tradition was elevating the love of God and expanding the love of neighbour. It means going beyond God as the creator and experiencing God as father and ultimately oneness with God.
In the wisdom tradition, the Upanishad sages have reached the highest level of God experience even five hundred years before Jesus when they realized that the Atman was Brahman. But the consequences of this realization did not reach the social fabric. It remained confining to the spiritual elite in the ashrams, the spiritual laboratories of that time. (The Buddha took his wisdom to the streets). Confronted by the social inequalities, political inequalities, economic inequalities and religious inequalities, they tried to answer these problems with the theory of karma and reincarnation. These theories created an unbreakable wall between the two sections of the society and did not facilitate social activism and transformation. It is only during the time of Sri Ramakrishna and Swami Vivekananda that a serious attempt has been made to build this gap and today Hinduism involves in social activism and social transformation.
Two thousand years ago the contribution of Jesus to wisdom tradition would have been to bring down the highest level of God experience to the level of love of neighbour and social transformation. Someone asked a question to Jesus about a person who was born blind. Why is this person born blind? Is it because of his sins or sins of his ancestors? They wanted to say that the blind person was responsible for his condition and they were not responsible for that person. They can go home and sleep peacefully. Jesus gave a revolutionary answer:This person is not born because of his sin or the sin of his ancestors but to manifest the glory of God. How can a blind person manifest the glory of God?
Suppose the persons who are able to see do not have any theory of karma or reincarnation, and look at the person, then the blind person may awaken, love, compassion and sharing in them and this will lead to contribute something to the blind person and there established a relationship of love, sharing and sacrifice and communion. In this relationship, the blind person sees God in the persons who are able to see and the persons who are able see God in the blind person and thank him for awakening love and compassion in them,which were asleep or dead. Jesus was telling them, do not make your journey in life with theories. Theories are like walls that we build to protect ourselves. Jesus said, the foxes have their holes and the birds have their nests but the son of man has nowhere to lie down and rest.He did not any theories. He was spiritual pilgrim,from God to God. If we make our journey without walls we are vulnerable. In this vulnerability we experience of God. To live is to relate. Human relationships are meant to help each other to give birth to the attributes of God. It is in relationships that we need to encounter God. Jesus was telling that there will be differences in the human conditions but do not look at people as the product of karma and reincarnation( even if there is truth in it) but look at people as the manifestations of God and encounter God in them and actualize your divine attributes in relationships. Jesus felt that the society in which he lived did not correspond to the will of God for humanity. He became a social activist and faced death because of his activism. His social activism came from his deep experience of oneness with God.
Hence we cannot say that Jesus just repeated what was already known but he made his own original contribution. It is fullness of love: Love is wisdom manifesting in action. The Upanishadic sages followed predominantly the path of wisdom. The Svethasvara Upanishad adds element of devotion and Isa Upanishad adds the element of action that comes from wisdom. It is the Bhagavat Gita, the spiritual genius, that synthesizes truth into Love. God is Love. Love is wisdom manifesting in action. Krishna symbolizes wisdom,Arjuna symbolizes action. They are in the same chariot. Krishna acts through Arjuna and Arjuna acts according to Krishna. Krishna loves Arjuna and Arjuna loves Krishna. Arjuna says, 'thy will be done'.
Jesus Christ was both Krishna and Arjuna.He was fully God in one level and fully human at another level. Thy will be done was his constant reply. What differentiates between the vision of the Bhagavat Gita and the vision of Christ is that the Bhagavat Gita proposes action that comes from wisdom but that action is not oriented towards the love of neighbour and social transformation but towards eliminating adharma and establishing dharma. Whereas the action of Jesus that comes from wisdom is to love one's neighbour and to transform the society into a place of equality, justice and love. The society should be a place where there people are free from religious oppression, political oppression, social oppression and economic oppression. It should be a place where love flows spontaneously in human relationships. It should be a place where everyone seeks the will of God and does the will of God
The God of Jesus does not come into the world to eradicate evil and remove adharma and establish dharma but invite both righteous people and unrighteous people to grow beyond righteousness and unrighteousness that comes according to the moral precepts but discover the unconditional love of God, which is like the Sun that radiates both on the good people and the bad people. The dharma of the kingdom of God transcends both dharma and adharma and opens the door to paradharma, the unconditional love. God does not promote war between the good and the bad but transforms the swords into ploughshares and spears into sickles. it is to transform the destructive instruments into productive instruments. It is to declare the end of war between the good and the bad and announce the beginning of peace.
In this way I discover that Jesus had made his own original contribution to the spiritual development of humanity. He did not just repeat what was already there. For me the originality of Jesus Christ was to bring together the wisdom and the prophetic traditions, which is really the destiny of our spiritual evolution as a whole. In this sense I see that the vision of Christ is still something belongs to the future and it was just laid a foundation stone two thousand year ago. Humanity is moving towards the vision of Christ. I do not think that Christianity represents this vision of Christ and I do not think it has been a good witness to the truth of Christ. It has given a good example to the love of neighbour but it has blocked the growth of Christians to experience the non-dualistic love of God, even though Jesus had opened this possibility to everyone. The challenge of the Vedic wisdom to Christianity is to open the door to the possibility of non-dualistic experience of God to all Christians. The challenge of Christ's vision to the wisdom traditions is to translate its wisdom into social transformation and liberating people from all oppressive structures and not just from spiritual ignorance.