Yah'shua the Messiah (Jesus Christ) is the critical issue on which Hinduism and Christianity part company. The Hindu believes that God became incarnate (that is, took on human form) time and time again throughout history. The Bible teaches that Yahweh-God became incarnate only once in human history. And he came not just to teach man but "to take away the sins of many" (Heb.9:28). When He comes again, He will come as the mighty judge of the living and the dead (see Rev.20:11-15).
Yah'shua (Jesus) gave proof of His claims, In John 5, He cited the witness of John the Baptist (v.33); His own works (v.36); the Father (v.37); and the Scriptures (v.39).
The resurrection of Yah'shua (Jesus) is another great stumbling block for Hindus. This refutes the Hindu teaching of continuous reincarnation and the Hindu belief that Christ is just another teacher-avatar (super-saviour).
The creed of Vedanta says: "We reject none, neither atheist, monist, polytheist, agnostic or theist. The only condition of being a disciple is modeling a character at once the broadest and most intense. We do not insist upon particular codes of morality ... Each is welcome to his own peculiarity, but he has no right to criticize the conduct of others."
By contrast, the Bible tells us that Elohim (God) came in the Messiah (Christ). Why did He enter human history? He came to die for the salvation of man. The Bible teaches that He rose again. But to the Hindu, Christ is only one of many great teachers and there is no such thing as sin to be saved from.