Jesus tells Nathanael that he will see angels ascending and descending on the Son of Man.  The Son of Man is Jacob’s ladder to heaven, but when? and how?

As noted in the previous post, John speaks writes of the exaltation of the Son of Man on the cross.  When the Son of Man is lifted up in death, He becomes the ladder to heaven; that’s when the heavens are opened; that’s when the One who descended begins to ascend again to the Father.