Cyril of Alexandria, on Gen 30:40

“And Jacob separated the flock, and put the rods in the troughs before the eyes of the rams: and all the white and the black were Laban’s: and the rest were Jacob’s, when the flocks were separated one from the other.”

“There is no association between the holy and the profane, between the pure and the impure. Those who belong to Christ are separated and refuse to mix with those who are in the world; they are free from carnal desires. They are marked by their way of life or rather are distinguished by their virtue. "The unmarked ones were Laban's, and the marked ones were Jacob's."”

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