caityasya tattvam amalaṁ maṇim asya kaṇṭhe
The yogī must contemplate the different parts of the transcendental body of the Lord. Here it is stated that the constitutional position of the living entities should be understood. There are two kinds of living entities mentioned here. One is called the arāti. They are averse to understanding the pastimes of the Supreme Personality of Godhead. For them, the Lord appears with His hand clutching the terrible mace, which is always smeared with bloodstains from His killing of demons. Demons are also sons of the Supreme Personality of Godhead. As stated in Bhagavad-gītā, all the different species of living entities are sons of the Supreme Personality of Godhead. There are, however, two classes of living entities, who act in two different ways. The Supreme Lord keeps on His neck those living entities who are pure, as one protects the jewels and pearls on the bosom and neck of one’s body. Those living entities in pure Kṛṣṇa consciousness are symbolized by the pearls on His neck. Those who are demons and are inimical towards the pastimes of the Supreme Personality of Godhead are punished by His mace, which is always smeared with the blood of such fallen living entities. The club of the Lord is very dear to Him because He uses this instrument to smash the bodies of the demons and mix their blood. As mud is kneaded with water and earth, so the earthly bodies of the enemies of the Lord, or the atheists, are smashed by the club of the Lord, which becomes muddied with the blood of such demons.