Passage: The first written evidence of deities in Egypt comes from the Early Dynastic Period (c. 3100–2686 BC). Deities must have emerged sometime in the preceding Predynastic Period (before 3100 BC) and grown out of prehistoric religious beliefs. Predynastic artwork depicts a variety of animal and human figures. Some of these images, such as stars and cattle, are reminiscent of important features of Egyptian religion in later times, but in most cases there is not enough evidence to say whether the images are connected with deities. As  Egyptian society grew more sophisticated, clearer signs of religious activity appeared. The earliest known temples appeared in the last centuries of the predynastic era, along with images that resemble the iconographies of known deities: the falcon that represents Horus and several other gods, the crossed arrows that stand for Neith, and the enigmatic "Set animal" that represents Set.

Question: What time frame was is suspected we learned of gods in Egypt?
c. 3100–2686 BC