Early Monastic Sabbath Observance
Historical Account★★★In this latter instance they [the ] seem to have followed a custom of which we find traces in the early monastic by which they held Saturday to be the Sabbath on which they rested from all their labors.
W.T. Skene, Adamnan’s Life of St. Columba, 1874, 96.
The point
A historical note from W.T. Skene's 1874 book suggests that early monastic communities observed Saturday as the Sabbath day of rest.
