That is true. Krishna has done many miracles. At his child age, he lifted Givardhnagiri to protect his people from the stony rain. He killed Kalindi snake at his very early age. He converted to banana trees into two Gandharvas. He managed 8 wives which is a big miracle. He managed the wedding of Abhimanyu with his game plan by taking the help of Ghatotgaja.Saving Pandavas from the fire accident of the house they are staying is also a big miracle. Like this, his life is full of miracles. It is true. I agree with the author. If we read Mahabagvatam, we will get all the miracles done by Krishna in his life.