The Sunday s theology grow away of Christ s resurrection. From here, this event understood that Day would be remembered as pascal memorial from the new and eternal alliance. Sunday constitute as much as new time of Christian Cult, leaving the Jewish Saturday, the seventh Day, tobe the first Saint Day. Sunday also assumes a scatologic called for the eighth day, and being the Sunday that hasn t final. The priests from the church left a great testimony, about this Day that begins here in order to have a eternity without a final. This dissertation proposes to complete a way about the Sunday theology. There is a vision since the Vaticano Concilio II, Sundays have being celebrated wiht a proposal that plain has an active participation. The Sacrosanctum Concilium had a great revelation, touch the liturgic question in the life of church, helping the, faith of community to celebrate and to live the Christ mistery. The imposition of search is history secure. The placement about salvation, developed, showing us that since the creation it was present in the Father s purposes. They were saved and regained the human being. It assembled biblical and eclesiastic liturgical persons. So, on Sunday Day, it s a place grantee of divine kindness, through of celebration of Pascal Christ, producing us the transformation to the life. The community celebrate the faith in god s Day in a sanctified in the spirit that was present in the creation, verbalized in the alliance of Sinai and incarnated in Christ. Sunday is the Spirit s Day, proceed in the church in a eucaristic celebration.