Moirai

In Greek mythology, the Moirai, often known in English as the Fates, were the white-robed incarnations of destiny.

Euphemistically the "sparing ones", or Fata; also analogous to the Germanic Norns. 

Their number became fixed at three: Clotho (spinner), Lachesis (allotter) and Atropos (unturnable).

http://www.greekmythology.com/pictures/Other_Gods/The_Fates/

Clotho: spinner

Clotho was responsible for spinning the thread of human life. 

She also made major decisions, such as when a person was born, thus in effect controlling people's lives. 

This power enabled her not only to choose who was born, but also to decide when gods or mortals were to be saved or put to death.

Clotho, along with her sisters and Hermes, was given credit for creating the alphabet for their people. 

Clotho and her sisters were real goddesses.

Clotho represented human life and her decisions represented the fate of all men in society.

Lachesis: allotter

Normally seen clothed in white, Lachesis is the measurer of the thread spun on Clotho's spindle, and in some texts, determines Destiny, or thread of life.

Lachesis was the apportioner, deciding how much time for life was to be allowed for each person or being. 

She measured the thread of life with her rod. 

She is also said to choose a person's destiny after a thread was measured. 

In mythology, it is said that she appears with her sisters within three days of a baby's birth to decide its fate.

Atropos: unturnable

Atropos or Aisa was the oldest of the Three Fates, and was known as the "inflexible" or "inevitable." 

It was Atropos who chose the mechanism of death and ended the life of each mortal by cutting their thread with her "abhorred shears." 

She worked along with her two sisters, Clotho, who spun the thread, and Lachesis, who measured the length.