Further to my post a while back on Jesus and Nathanael in John 1, it's interesting to note that in the Dictionary of Jesus and the Gospels (Midrash in the Gospels, 546) the intepretation offered by Carson (with help from Clowney) is mentioned, that is, that in Genesis 28 the angels are ascending and descending not on the stairway or ladder, but on Jacob himself. This interpretation is supposedly supported by Genesis Rabbah 69.3. In Gen. Rab. 68.12, the angels come down to gaze on Jacob - giving the focus as Jacob, not the stairway. Then, as I posted before, Christ's words to Nathanael in John 1:51 become not about Christ as stairway, but Christ as the new Jacob, the new Israel; and the one whom the angels come down to gaze upon.