living in accordance with the Lord’s day [kata kyriakēn], on which our life also arose through him and his death.”16 Note that Ignatius was not pushing for a new day of worship, nor was he defending a recent change from Saturday to Sunday. Rather, he simply explained why the original Jewish disciples of Jesus switched from keeping the Sabbath to worshipping on Sunday, the Lord’s Day, the day of his resurrection.17 This historical evidence shows that even first-generation Jewish believers in Jesus
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