Each and every day of the Jesus was written in book. But 7yrs of Jesus life is or not mentioned in the book. Do you know where he was all these 7yrs? Jesus spent 7yrs to gain knowledge in Himalayas after he got the knowledge he returned to Jerusalem. He got his knowledge from the Hindu Pandits. But still people say that Christianity is great. When your god got knowledge from Hindus then how come Christianity is greater than Hinduism.
