Bede the Venerable — as excerpted in the Catena Aurea on Luke 24:13-24

“It is the same as Nicopolis, a remarkable town in Palestine, which after the taking of Judæa under the Emperor Marcus Aurelius Antonius, changed together with its condition its name also. But the stadium which, as the Greeks say, was invented by Hercules to measure the distances of roads, is the eighth part of a mile; therefore sixty stades are equal to seven miles and fifty paces. And this was the length of journey which they were walking, who were certain about our Lord’s death and burial, but doubtful concerning His resurrection. For the resurrection which took place after the seventh day of the week, no one doubts is implied in the number eight. The disciples therefore as they walk and converse about the Lord had completed the sixth mile of their journey, for they were grieving that He who had lived without blame, had come at length even to death, which He underwent on the sixth day. They had completed also the seventh mile, for they doubted not that He rested in the grave. But of the eighth mile they had only accomplished half; for the glory of His already triumphant resurrection, they did not believe perfectly.”