"[Jesus] importunes for us by exhibiting before the Paternal conspection the humanity [he] assumed for us and the mysteries [he] celebrated in it."

"interpellat pro nobis humanitatem pro nobis assumptam et mysteria in ea celebrata conspectui paterno repraesentando."

     St. Thomas Aquinas, Super Rom. 8.7.

     I was put on to this by John Saward, Cradle of redeeming love:  the theology of the Christmas mystery (San Francisco:  Ignatius Press, 2002), 93:  "As St Thomas says, our Lord 'makes intercession' for us in Heaven, not by offering up petitions, but 'by making present (repraesentando) in the sight of the Father the humanity assumed for us and the mysteries celebrated in that humanity'."
     Aquinas goes on to cite Heb 9:24.