The celebration of Easter did not begin with Christianity but began many hundreds of years before the birth of Christ. As with many holidays, Easter was incorporated into the Christian faith and is of Pagan origin.

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http://www.zenzibar.com/Articles/easter.asp

Bunnies, and Easter egg decorating did not originate in the Christian version of Easter.

Originally, the crucifixion was the crossifixion of the Sun, and it’s resurrection as the season of fertility returned to the Earth.