Columba on the Sabbath
"Having continued his labours in Scotland thirty-four years, he clearly and openly foretold his death, and on Saturday, the month of June, said to his disciple Diermit: "This day is called the Sabbath, that is the rest day, and such will it truly be to me; for it will put an end to my labours.'"
Butler's Lives of the Saints, Vol.1, A.D. 597, art. "St. Columba" p. 762