Yamaraja, or Dharmaraja, as the superintendent of death, has to judge the criminal living entities

Expressions researched:
"superintendent of death"

Srimad-Bhagavatam

SB Canto 4

SB 4.14.26-27, Translation: Lord Viṣṇu; Lord Brahmā; Lord Śiva; Lord Indra; Vāyu, the master of air; Yama, the superintendent of death; the sun-god; the director of rainfall; Kuvera, the treasurer; the moon-god; the predominating deity of the earth; Agni, the fire-god; Varuṇa, the lord of waters, and all others who are great and competent to bestow benedictions or to curse, all abide in the body of the king. For this reason the king is known as the reservoir of all demigods, who are simply parts and parcels of the king's body

SB 4.15.15, Translation: The demigod of air, Vāyu, presented King Pṛthu with two whisks [cāmaras] of hair; the King of religion, Dharma, presented him with a flower garland which would expand his fame; the King of heaven, Indra, presented him with a valuable helmet; and the superintendent of death, Yamarāja, presented him with a scepter with which to rule the world.

SB 4.22.59, Translation: Mahārāja Pṛthu's intelligence and education were exactly like that of Yamarāja, the superintendent of death. His opulence was comparable to the Himalaya Mountains, where all valuable jewels and metals are stocked. He possessed great riches like Kuvera, the treasurer of the heavenly planets, and no one could reveal his secrets, for they were like the demigod Varuṇa's.

SB 4.22.59, Purport: Yamarāja, or Dharmarāja, as the superintendent of death, has to judge the criminal living entities who have committed sinful activities throughout their lives. Consequently Yamarāja is expected to be most expert in judicial matters. Pṛthu Mahārāja was also highly learned and exceedingly exact in delivering his judgment upon the citizens. No one could excel him in opulence any more than estimate the stock of minerals and jewels in the Himalaya Mountains; therefore he is compared to Kuvera, the treasurer of the heavenly planets. Nor could anyone discover the secrets of his life any more than learn the secrets of Varuṇa, the demigod presiding over the water, the night, and the western sky. Varuṇa is omniscient, and since he punishes sins, he is prayed to for forgiveness. He is also the sender of disease and is often associated with Mitra and Indra.