There is only 1 God NARAYANA no Second to Him - Yajurveda and Mahabharata

Narayana (Vishnu) have 1000 Names as per Attributes and Charteris tic (Forms/ Avatar) and Narayana (Pursha- Viswaroopa) shown in Sri Bhagavad Gita.

I am Narayana, the Source of all things, the Eternal, the Unchangeable. I am the Creator of all things, and the Destroyer also of all. I am Vishnu, I am Brahma and I am Sankra, the chief of the gods. I am king Vaisravana, and I am Yama, the lord of the deceased spirits. I am Siva, I am Soma, and I am Kasyapa the lord of the created things. And, O best of regenerate ones, I am he called Dhatri, and he also that is called Vidhatri, and I am Sacrifice embodied. Fire is my mouth, the earth my feet, and the Sun and the Moon are my eyes; the Heaven is the crown of my head, the firmament and the cardinal points are my ears; the waters are born of my sweat. Space with the cardinal points are my body, and the Air is my mind...

...And, O Brahmana, whatever is obtained by men by the practice of truth, charity, ascetic austerities, and peace and harmlessness towards all creatures, and such other handsome deeds, is obtained because of my arrangements. Governed by my ordinance, men wander within my body, their senses overwhelmed by me. They move not according to their will but as they are moved by me.

— Mahabharata (translated by Kisari Mohan Ganguli, 1883-1896), Book 3, Varna Parva, Chapter CLXXXVIII (188)[4]