A scholar explains the rich historical roots of Easter and how it has evolved over the centuries

In A.D. 325, the Emperor Constantine, who favored Christianity, convened a meeting of Christian leaders to resolve important disputes at the Council of Nicaea. The most fateful of its decisions was about the status of Christ, whom the council recognized as fully human and fully divine. This council also resolved that Easter should be fixed on a Sunday, not on day 14 of Nisan. As a result, Easter is now celebrated on the first Sunday after the first full moon of the vernal equinox.