According to the Phoenician theogony, "the first gods which were
worshipped by oblations and sacrifices were the fruits of the
earth, on which they and their descendants lived as their
forefathers had done."

Although, after the art of agriculture had been developed,
mankind was gradually relieved from its past dependence on the
tree as a means of support, it nevertheless continued to be
regarded with veneration as an emblem of creative power or of
productive energy.

Among the traditions and monuments of nearly every country of the
globe are to be found traces of a sacred tree--a Tree of Life.
In various countries there appear two traditional trees, the one
typical of the continuation of physical life, the other
representing spiritual life, or the life of the soul. After the
age of pure Nature-worship had passed, however, and serpent,
fire, and phallic faiths had been introduced, the original
signification of the tree, like that of all other religious
emblems, became considerably changed. Through its energies, or
life-giving properties, existence had long been maintained, and
for this reason, as has already been observed, it became an
object of veneration; but, after the reproductive power in man
had risen to the dignity of a supreme God, the tree, to the
masses of the people, became a symbol of the physical,
life-giving energy in mortals and in animals. In other words, it
became a phallic emblem representing the continuation of
existence, or the power to reproduce or continue life on the
earth. As a religious symbol it became the traditional Tree of
Life.