His noose is basically hell for sinners. None can escape him. The way the Vedas describe him is like a very ancient secret that no one completely knows but it knows everything about everyone.
Rig Ved 1.25.7–8 - He is the knower of every movement happening universally
He, who knows the path of the birds flying through the air; he, abiding in the ocean, knows (also) the course of ships. He, who accepting the rites (dedicated to him) knows the twelve months and their productions and that which is supplementarily engendered.
Rig Ved 7.86.3 - Varuna is shown as the god of divine justice. A figure whose displeasure is feared among mortals.
Desirous of beholding you, Varuṇa, I inquire what is my offence; I have gone to make inquiry of thewise; the sages verily have said the same thing to me: -- this Varuṇa is displeased with you
Atharva Ved 4.16.2 - Varuna is always present in invisible form among men, no thought or conspiracy is hidden from him.
If two persons sit together and scheme, King Varuna is there as a third, and knows it.
Atharva Ved 4.16.4 - You cannot run from Varuna, he and his ganas will find you anywhere.
He that should flee beyond the heaven far away would not be free from king Varuna. His spies come hither (to the earth) from heaven, with a thousand eyes do they watch over the earth.
Atharva Ved 4.16.5 - His omniscience is so precise that it borders on the mathematical and supernatural. He doesn't just watch humanity. he quantifies existence itself.
Numbered by him are the very winkings of the eyes of men. As a gambler fixes his dice, so does he arrange all these things.
Atharva Ved 4.16.7–8 - Varuna punishes liars, even the divine gods can come under his justice.
7. With a hundred snares, O Varuna, surround him, let the liar not go free from thee, O thou that observest men! The rogue shall sit, his belly hanging loose, like a cask without hoops, bursting all about!
8. With (the snare of) Varuna which is fastened lengthwise, and that which (is fastened) broadwise, with the indigenous and the foreign, with the divine and the human,--
Rig Ved Rigveda 7.89.2 - 4 - Varuna is very unique in punishment. there are two methods.
1) he fills your whole body with so much fluid that you are internally drowned with it and you die in pain and agony.
2) he makes you feel so much thirst then makes an illusion of water all around you until you beg for water.
When, Varuṇa, I am throbbing as if (with awe) like an inflated skin, grant me happiness, possessor ofwealth, grant me happiness. Opulent and pure (Varuṇa), if through infirmity I have done what is contrary (to the law), yet grant mehappiness, possessor of wealth, grant me happiness. Thirst distresses (me) your worshipper in the midst of the waters; grant me happiness, possessor ofwealth, grant me happiness.
Rigveda 8.41.8 - He is always hidden yet when the time comes he destroys the dark one’s (tama) with light.
He, the ocean-dwelling, hidden (Apicya), swift god... he o'erspreads the dark ones with a robe of light.
Rig Ved 1.24.15 - His noose captures souls who deviate from Rta. A prayer is given to him to specifically loosen his noose.
O Varuna, loosen from us the uppermost noose, untie the middle one, and take away the lowest, so that we may live.
Aghamarsana Sukta(Mahanarayanopanishad) - describes Varuna as the fire within the water. This sukta is being sung by a sinner who prays and asks Varuna and his consort Varuni to forgive him for his sins.
I take refuge in Varuna, who is of golden lustre or who has a golden diadem. O Varuna, being entreated by me, grant me the saving grace. For I have enjoyed what belongs to bad people and accepted gift from sinners. May Indra, Varuna, Brihaspati and Savita completely destroy that sins committed by me and my people in thought, word and act. Salutations to fire hidden in water. Salutation to Indra. Salutation to Varuna. Salutation to Varuni, the consort of Varuna. Salutation to the deities of waters. (Through the power of this mantra). let all that is injurious, impure and troublesome in water be destroyed.
Namo Narayana 🙏🏻🪔🪷🦅
Hara Hara Mahadeva 🙏🏻🪔📿🔱