"Sri Krishna was a teacher from the very beginning of his life. Even before he entered into the physical world he acted as a teacher. Before he entered into his mother’s womb, he came to his father who had been imprisoned by the king and said, "I am now going to enter into the physical world. As soon as I am born, you will take me out of this prison-cell and take me to Nanda" (one of his relatives). His father saw Sri Krishna vividly before he came into the world of manifestation, and to everybody’s surprise, all of a sudden all the doors and gates of the prison were wide open, and his father took him to Nanda’s place. Here he started his teaching."
From: Krishna – The Eternal Mystery by Sri Chinmoy