We have twelve months in a year

Twelve sings in the zodiac

twelve disciples that followed the Christ

We have four season of three months I say this to make a shift

three signs are assigned to Fire Water Earth and air.

there are the phases of life

you start as a child grow to an adult and mature as a sage or a crone.

Most Goddess have three phases Maiden, mother and Crone.

For the christians there is the Father, Son and Holy ghost.