Mbh 6.66.2b

It is by the Yoga of his Supreme Excellence, and the Yoga of his Self, that the sons of Pandu, O king, are supported. Victory, therefore, will surely be theirs. He it is that always imparteth to the Pandavas and understanding endued with righteousness, and strength in battle; and He it is that always protecteth them from danger. He is the Eternal God, pervading all beings, and ever blessed. He, of whom thou hadst asked me, is known by the name of Vasudeva. He it is whom Brahmanas and Kshatriyas and Vaisyas and Sudras, having distinctive features of their own, humbly serve and worship with restrained hearts and performing their own duties. He it is who, towards the close of the Dwapara Yuga and the beginning of the Kali Yuga, is sung of with Sankarshana, by believers with devotion. It is that Vasudeva that createth, Yuga after Yuga, the worlds of the gods and the mortals, all cities girt by the sea, and the region of human habitation.--’”