Number Symbolism

Three is connected with 'completeness', in narrative time [beginning,
middle, end], in space [length, breadth, width], in family [mother,
father, child].

It is connected with the concept of 'all', 'many', 'and enough'; it
is superlative, greatest, best [and worst]. As one is singularity, two duality, three symbolises multiplicity.

It is attributed to the planet Jupiter, the greater benefic and planet of good
fortune, and the trine the most fortunate of the aspects [360/3 =120 -
the trine], it emphasises the element [trine aspects occur between
planets in signs of the same element].

It is a number of generation, fertility and abundance, connected with
mother earth as 'lady bountiful' and the provider of all our needs. Venus in her aspect as ‘Natura’, the Empress as ‘Lady Bountiful’ we may see as Venus in her aspect as ‘Natura’, also symbolised by the lady with a crown of flowers in the lovers card [TdM pattern].

As the first triangular number with a baseline of 2 it is the
reconciliation or synthesis of opposites in an harmonious, balanced
and productive manner [the base of the triangular number 6, number of
among other things of love; the square root of the number 9, thus the
fertilised egg that grows 9 months in the womb, that which at 9
becomes 'squared, that is to say made manifest, given birth to].
A 'thing' in abstraction, generic, concealed and in the process of
formation and development, without as yet a concrete and specific
identity of its own, as yet to be ‘realized’.