Augustine of Hippo — as excerpted in the Catena Aurea on Mark 10:1-12

“(cont. Faust. xix. 29) Behold the Jews are convinced out of the books of Moses, that a wife is not to be put away, while they fancied that in putting her away, they were doing the will of Moses. In like manner from this place, from the witness of Christ Himself, we know this, that God made and joined male and female, for denying which the Manichees are condemned, resisting now not the books of Moses, but the Gospel of Christ.”