Do any Vedic verses depict Lord Vishnu to be supreme?
Yes, Rig Veda (1.22.20) makes it very clear that it is Vishnu who empowers all the heavenly Devas extolled and glorified in the Vedas.
Vishnu occupies the paramount position. All the other deities look always to His feet.
Rig Veda 10.113.2 states:
Vishnu is glorified because of who and what He intrinsically is. Indra, on the other hand, is only glorious circumstantially.
Rig Veda 1.156.2 states:
Vishnu is the most ancient of all, yet also the most recent. Nothing and no one creates Vishnu, yet Vishnu creates everyone and everything.
The Narayana Suktam of the Yajurveda states:
Narayana is the Lord of the universe. This master is the ruler of himself. He is the eternally auspicious one and he is constant and unchanging. This Narayana is the highest thing to be known. He is the inner-psyche of all. He is the supreme object and the highest goal of attainment.
Narayana is the supreme Brahman. Narayana is the supreme Reality. Narayana is the supreme Light. Narayana is the supreme Self. Narayana is the most excellent meditate and meditation.
The Narayana Upanishad states:
The supreme person Narayana willed to create beings. From Narayana emerged the life principle.
From Narayana emerged the mind and all the senses. From Narayana, came Vayu, Surya, Varuna and Prithvi, which became the constituents of the Universe.
From Narayana came Brahma. From Narayana emerged Maha-Rudra. From Narayana came Indra.
From Narayana came all the Prajapatis. From Narayana came the twelve sons, the eight Vasus, the Rudra and all the Vedas.
All beings emerged from Narayana. Narayana sustains all beings. Every being merges into Narayana. Narayana is the eternal principle.
Brahma is Narayana. Shiva is Narayana. Indra is Narayana. Earth and Heaven are Narayana.
Time verily is Narayana. Directions are Narayana. The upper world is Narayana. The nether world is Narayana. Narayana forms the inner as well as the outer worlds.
Everything is a manifestation of Narayana. He is both past, present and future.
Narayana is immaculate, ever blissful, blemishless and non-dual. Narayana is the Supreme Self without a moment. This is declared by the Yajurveda. Narayana, who is also known as Vishnu, pervades the whole universe and it is He alone who exists.
Later on, the same Upanishad also states:
The seat of Narayana is the lotus of the heart. The knowledge of Narayana alone is the highest form of wisdom. Sri Krishna, the son of Devaki, who is the vanquisher of Madhu is the ultimate Brahman. He alone resides in all beings. He is both the causeless and the cause of everything.
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