Mahabharata Drona Parva Chapter 202:7

Mahabharata Drona Parva (Drona-vadha Parva) Chapter 202:7 He is the day, and he is the night. He is the fortnight, he is the month, he is the seasons. He is the morning and evening-twilights, he is the year. He is Dhatri, he is Vidhatri, he is the Soul of the universe, and he is the doer of all acts in the universe. Though himself without body, it is he who is the embodied celestial. Endued with great splendour he is adored and praised by all the gods. He is One, he is Many, he is hundred and thousand. Brahmanas versed in the Vedas say that he hath two forms. These are the terrible and the auspicious. These two forms, again, are multifarious. His auspicious forms are water, light, and the moon. Whatever is highly mysterious in the several branches of the Vedas, in the Upanishads, in the Puranas, and in those sciences that deal with the soul, is that God, viz., Maheswara, Mahadeva is even such. That God is, again, without birth. All the attributes of that God are not capable of being enumerated by me even if, O son of Pandu, I were to recite them continually for a thousand years. Even unto those that are afflicted by all the evil planets, even unto those that are stained with every sin, that great protector, if they seek him, becomes gratified with them and granteth them salvation. He granteth, and taketh away life and health and prosperity and wealth and diverse kinds of objects of desire. The prosperity is his that is seen in Indra and other gods. He is ever engaged in the good and evil of men in this world. In consequence of his supremacy, he can always obtain whatever objects he desires. He is called Maheswara and is the lord of even the supreme ones. In many forms of many kinds he pervadeth the universe. The mouth which that God has is in the ocean. It is well-known that mouth, assuming the form of a mare's head, drinketh the sacrificial libation in the shape of water. This god always dwelleth in crematoriums. Men worship that Supreme lord in that place where none but the courageous can go. Many are the blazing and terrible forms of this God that men speak of and worship in the world. Many also are the names, of truthful import, of this Deity in all the worlds. Those names are founded upon his supremacy, his omnipotence, and his acts. In the Vedas the excellent hymn called Sata Rudriya, hath been sung in honour of that great God called the infinite Rudra. That God is the lord of all wishes that are human and heavenly. He is omnipotent, and he is the supreme master. Indeed, that God pervadeth the vast universe. The Brahmanas and the Munis describe him as the First-born of all creatures. He is the First of all the gods; from his mouth was born Vayu (the wind). And since he always protecteth the creatures (of the universe) and sporteth with them, and since also he is the lord of all creatures, therefore is he called Pasupati.