Matthew 1:17

The evangelist, for reasons which we cannot fathom, reduces our Saviour's progenitors to fourteen in each period of the Jewish state; and in the first period, determining with David, there were no more. In the second, he leaveth out three kings descended from the daughter of Ahab. In the third, which was from the captivity to Christ, there were doubtless more; Luke reckoneth up twenty-four, (taking in Christ for one), and agreeth in very few with Matthew, who was forced to leave out some to keep to this number of fourteen. Nor doth Matthew speak any thing false, or contradictious to Luke, in saying there were fourteen though there were more. Besides, there might be many more progenitors of Mary than of Joseph, whose pedigree Matthew deriveth.