Era beginning/end
One by one, the gods and many powerful spirits gave up their divinity and went into the earth to be reborn as mortals. This marks the end of the age of the gods, and Eainor shall soon follow
Although the tales of the people of Eainor will say the gods forsook the earth in disgust and sorrow, or perhaps even say they were killed by vengeful gods of other planets, the gods did not truly leave Eainor, they only wished to grow closer to it. Their worshippers would not listen to them, and they saw their powers and symbols being used in vain. So they decided they must become human and join the mortals in life and death so that they could better understand their beloved creation.