SB 5.14.29 — The personal weapon used by Lord Kṛṣṇa, the disc, is called hari-cakra, the disc of Hari. This cakra is the wheel of time. It expands from the beginning of the atoms up to the time of Brahmā’s death, and it controls all activities. It is always revolving and spending the lives of the living entities, from Lord Brahmā down to an insignificant blade of grass. Thus one changes from infancy, to childhood, to youth and maturity, and thus one approaches the end of life. It is impossible to check this wheel of time. This wheel is very exacting because it is the personal weapon of the Supreme Personality of Godhead. Sometimes the conditioned soul, fearing the approach of death, wants to worship someone who can save him from imminent danger. Yet he does not care for the Supreme Personality of Godhead, whose weapon is the indefatigable time factor. The conditioned soul instead takes shelter of a man-made god described in unauthorized scriptures. Such gods are like buzzards, vultures, herons and crows. Vedic scriptures do not refer to them. Imminent death is like the attack of a lion, and neither vultures, buzzards, crows nor herons can save one from such an attack. One who takes shelter of unauthorized man-made gods cannot be saved from the clutches of death.