Patristic A.D. 397
“Or this number is used because God rested on the seventh day from His works. After the seventh day of the world everlasting rest is promised us, that as the evil works of that world shall then cease, so also may the sharpness of punishment be abated.”
Catena Aurea: Gospel of Luke, as excerpted in the Catena Aurea on Luke 17:3-4
PD · J. H. Newman (Oxford, 1843) ↗