Lent and its Relationship to Baptism Originating in the first three centuries of the Christian era, Christians would prepare for Easter by spending three days in prayer while fasting. It would later become a three-week period of intense spiritual and liturgical preparation for catechumens that were seeking to be baptized at Easter. As Christianity became more widespread and most people were being baptized in their infancy, Lent lost its connections with the baptizing of catechumens. That was until the Second Ecumenical Council of the Vatican, or Vatican II, restored the order of catechumens. Allowing for adult converts to be baptized at the Easter Vigil, which takes place after sundown on Holy Saturday.