Easter was originally the celebration of Ishtar, the Assyrian and Babylonian goddess of fertility and sex. Ancient Egyptians (KHEM) believed in a primeval egg from which the sun god hatched.
Alternatively, the sun was sometimes discussed as an egg itself, laid daily by the celestial goose, Seb, the god of the earth. Hinduism makes a connection between the content of the egg and the structure of the universe: for example, the shell represents the heavens, the white the air, and the yolk the earth. The Chandogya. Upanishads describes the act of creation in terms of the breaking of an egg.
In the Zoroastrian religion, the creation myth tells of an ongoing struggle between the principles of good and evil. During a lengthy truce of several thousand years, evil hurls himself into an abyss and good lays an egg, which represents the universe with the earth suspended from the vault of the sky at the midway point between where good and evil reside.
In China, there are several legends that hold a cosmic egg at their center, including the idea that the first being or certain people were born of eggs. For example, the Palangs trace their ancestry to a Naga princess who laid three eggs. The cosmic egg, according to the Vedic writings, has a spirit living within it which will be born, die, and be born yet again. Certain versions of the complicated Hindu mythology describe Prajapati as forming the egg and then appearing out of it himself. Brahma does likewise, and we find parallels in the ancient legends of Thoth and Ra.
All of these doctrines are thousands of years before the Bible.