Glossa Ordinaria
Catena Aurea · Matthäusevangelium 1
So all the generations from Abraham to David are fourteen generations; and from David until the carrying away into Babylon are fourteen generations; and from the carrying away into Babylon unto Christ are fourteen generations.
Or, the ten refers to the decalogue, the four to this life present, which passes through four seasons; or by the ten is meant the Old Testament, by the four the New.