Deuteronomy 22:10

Plough. In Leviticus xix. 19, this law is expressed, so as to forbid the procreation of mongrels. See Judges xiv. 18. People who have treated on agriculture observe, that it is a pernicious practice to make animals of unequal size and speed work together. (Columella vi. 2.) --- St. Paul explains to us the mystical sense of this passage. Bear not the yoke together with infidels, 2 Corinthians vi. 14. (Calmet) --- Marry not with such. (Haydock) --- Employ not in the sacred ministry the imprudent and wicked with those of a virtuous disposition. (St. Gregory, Mor. i. 16.)