Ambrose of Milan, on Judg 19:1

“There was a certain Levite, who dwelt on the side of mount Ephraim, who took a wife of Bethlehem Juda:”

“How full of pitiful traits is this story! A man, it says, a Levite, had taken to himself a wife, who I suppose was called a concubine from the word concubitus. She some time afterwards, as is likely to happen, offended at certain things, returned to her father and was with him four months.”

Imported from an open dataset — not yet checked against the printed edition.