Hilary of Poitiers — as excerpted in the Catena Aurea on Matthew 1:1

“(Quæst. Nov. et Vet. Test. q. 49.) What God conferred on those, who, by the anointing of oil were consecrated as kings or priests, this the Holy Spirit conferred on the Man Christ; adding moreover a purification. The Holy Spirit cleansed that which taken of the Virgin Mary was exalted into the Body of the Saviour, and this is that anointing of the Body of the Saviour’s flesh whence He was called Christb. Because the impious craft of the Jews denied that Jesus was born of the seed of David, he adds, The son of David, the son of Abraham.”