Back in ancient greek times around the years when the first record olympic games in 776 B.C. was to far from when christianity was form so the religion aspect was celebrated different. Back in greek time Polytheism was the main religion and the practices of multiple gods and goddesses in which certain rituals were done for each of their gods believing they each had a job in the nature world.
In the olympics each person were to come out and see to see if any of them were worthy enough to please the gods, and in return of showing