It was believed that the Fates would appear within three days of someone’s birth to decide their fate. The three Moirai represented the cycle of life, essentially standing for Birth, Life, and Death. They would spin (Clotho), draw out (Lachesis) and cut (Atropos) the thread of Life.
The Fates were originally called Moirai in Ancient Greece. They are "Clotho", "Lachesis" and "Atropos". The ancient Greeks believed that many aspects of a person’s life were determined by the three mythical women known as Fates. These were three sister goddesses that appeared in Greek and Roman mythology and were believed to have “spun out” a child’s destiny at birth. They determined when life began, when it ended, and everything in between. At the birth of each man they appeared spinning, measuring, and cutting the thread of life. However not everything was inflexible or pre-determined. A man destined to become a great warrior one day could still choose what he wanted to do on any given day. The gods could simply intervene with decisions that could be helpful or harmful. In a sense, they controlled the metaphorical life of every mortal born. Reference https://greece.greekreporter.com/2018/03/17/the-moirai-the-fates-of-greek-mythology/ https://www.greekmythology.com/Other_Gods/The_Fates/the_fates.html https://aquileana.wordpress.com/2014/11/20/greek-mythology-the-moirae-the-three-fates/ https://www.ancient-origins.net/myths-legends-europe/three-fates-destiny-s-deities-ancient-greece-and-rome-003039