Glossa Ordinaria — as excerpted in the Catena Aurea on Matthew 1:17

“Or in this number is signified the sevenfold grace of the Holy Spirit. The number is made up of seven, doubled, to shew that the grace of the Holy Spirit is needed both for soul and body to salvation. Also the genealogy is divided into three portions of fourteen thus. The first from Abraham to David, so as that David is included in it; the second from David to the carrying away, in which David is not included, but the carrying away is included; the third is from the carrying away to Christ, in which if we say that Jeconiah is included, then the carrying away is included. In the first are denoted the men before the Law, in which you will find some of the men of the Law of nature, such as Abraham, Isaac, and Jacob, all as far as Solomon. In the second are denoted the men under the Law; for all who are included in it were under the Law. In the third are found the men of grace; for it is finished in Christ, who was the giver of grace; and because in it was the deliverance from Babylon, signifying the deliverance from captivity that was made by Christ.”