Three (3)
Multiplicity; creative power; growth; forward movement overcoming duality; expression; synthesis. 'Three is the first number to which the word "all" has been appropriated' and 'The Triad is the number of the whole, inasmuch as it contains a beginning, a middle and an end' (Aristotle). The 'power of three' is universal and is the tripartite nature of the world as heaven, earth and waters; it is man as body, soul and spirit; birth, life death; beginning, middle, end; past, present, future; the three phases of the moon, etc. Three is the 'heavenly' number, representing the soul, as four is the body. Three introduces the all-embracing Godhead - Father, Mother, Son, which is also reflected in the human family. There are innumerable trinities of gods and powers, and triune lunar deities and threefold goddesses. From: An Illustrated Encyclopaedia of Traditional Symbols (J.C. Cooper)
A favorable number associated to the childbirth and to the birth.
The number three is used often in the Greek mythology. They had 3 residences - sky, earth, hell -, 3 graces - Aglae, Euphrosine, Thalie -, 3 judges of hell - Minos, Eaque, Rhadamante -, 3 furies - Alecto, Megere, Tesiphone -, 3 park - Clotho, Lachesis, Atropos -, 3 Gorgones - Medusa, Euryale, Stheno -, 3 heads of the dog Cerbere, etc.
The three acts of the existence: the Birth, the Life and the Death.
Songs referenced:
'97
Bonnie & Clyde